Kobolds & Catacombs


 * ''"Legends tell of a vast underground world, and the countless treasures that lie in store for worthy adventurers...
 * You've signed up the best, you're on a great quest to find the mighty mother lode. There's treasure galore, but perils in store, and construction that isn't up to code. Trespass with care, there's sure to be something rare, you can grab all the loot that you can handle! Such riches you'll own, but leave one thing alone...
 * ''YOU NO TAKE CANDLE!
 * And if you steal their light, you then must take flight, eluding each hazard and each trap! It's a chaotic race, as the monsters give chase, and all the while, you're trying to follow the map! They're gaining on you, your options are few, and you fear that you're never gonna get home! You've sought after wealth, will you lose all your health... to Kobolds & Catacombs?"

Kobolds & Catacombs is Hearthstone ' s seventh expansion. Featuring 135 new collectible cards, the expansion released on December 7, 2017 in the Americas region and December 8 in the Europe and Asia regions. Hearkening back to the roots of classic fantasy and dungeon crawlers, the expansion sees players venturing deep into dark dungeons and winding catacombs in search of treasure and loot, encountering monsters, traps, rival adventurers, and — above all — slovenly, candle-obsessed kobolds along the way.

The expansion introduces the Recruit keyword as well as the Dungeon Run, a unique single-player experience where players defeat increasingly more challenging bosses using a deck of cards they acquire along the way.

How to get
Kobolds & Catacombs cards are available through the following options:


 * Kobolds & Catacombs card packs can be purchased through the Shop, with the usual prices and purchasing options.
 * Kobolds & Catacombs cards can be crafted for the usual amounts of Arcane Dust.
 * For as long as Kobolds & Catacombs was the latest expansion, the guaranteed card pack from each Arena run was from the expansion. Once the next expansion came out, second card packs have a chance to be Kobolds & Catacombs packs.
 * The Highest Rank Bonus chest has a chance to award golden Kobolds & Catacombs cards.


 * Pre-order
 * Prior to the expansion's release, players were able to pre-order a bundle of 50 Kobolds & Catacombs packs for $49.99 USD/€49,99 EUR/£44.99 GBP/$64.99 AUD or equivalent.
 * The pre-order bundle came with a unique card back (see below).

Cards
The set contains 135 collectible cards in total - 45 neutral cards and 90 class cards (10 per class). There are in total 49 Commons, 36 Rares, 27 Epics, and 23 Legendaries. Kobolds & Catacombs cards can be recognized with a special watermark (a candle) behind the card text, not found on other cards.

Each class receives two Legendary cards: a minion card and a weapon card.

Neutral

 * Common (22 cards)


 * Rare (9 cards)


 * Epic (9 cards)


 * Legendary (5 cards)


 * Uncollectible

Druid

 * Uncollectible


 * Choice cards

Hunter

 * Uncollectible

Mage

 * Uncollectible

Paladin

 * Uncollectible

Priest

 * Uncollectible

Rogue

 * Uncollectible

Shaman

 * Uncollectible

Warlock

 * Uncollectible

Warrior

 * Uncollectible

Dungeon Run

 * You press on through the dark, eager to find your way back to the surface. But try as you might, you find yourselves stumbling ever deeper down the endless mineshafts. You remember the innkeeper’s warnings: In their mad quest for the treasures of the earth, the kobolds and their reckless digging have awakened terrifying, powerful… Wait, did you hear that?

Dungeon Runs are a new type of free single-player experience reminiscent of games from the "" genre. At the start of a Dungeon Run, the player chooses a class and receives a starting deck consisting of 10 cards, while their hero starts at 15 Health. Each class has slightly different deckbuilding options, and the deckbuilding is a completely self-contained experience; the player doesn't need to already own any cards outside of the Dungeon Run.

The player will use their deck to defeat 8 increasingly difficult encounters chosen randomly from a pool of 48 possible encounters. Some encounters are rarer than others and will only occasionally appear.

As the player progresses through the dungeon, they will acquire new cards to add to their decks along the way. Every time the player defeats a Dungeon Run encounter, they are given the opportunity to "level up" their deck by choosing one of three themed sets of three cards appropriate for their class. These "loot piles" have synergistic themes and consist of cards pulled from all of Hearthstone ' s history, and since they are offered after every single encounter, it gives the player an almost unlimited amount of opportunity to customize their deck. The loot piles don't respect normal deckbuilding rules, meaning the player can choose to acquire more than two copies of a single card. Occasionally, the player will also be able to pick from a selection of three Treasure cards - a total of 40 non-collectible cards and abilities created exclusively for the Dungeon Run and which would be too powerful for normal play. Over the course of the run, the player will obtain 2 passive Treasure cards that provide a permanent benefit, such as buffing the player's minions or causing their opponents' cards to cost more mana, as well 2 extremely powerful active Treasure spells.

The player will need to defeat all 8 encounters to clear the run. If the player is defeated by one of the bosses, they will need to start over on a different run using a new deck.

Completing a full Dungeon Run with all nine classes will reward the Candle King card back.

With 9 classes, 48 possible encounters, and 40 Treasure cards, Blizzard themselves aren't sure how many combinations are possible in the Dungeon Run, and it has been described as Hearthstone ' s most replayable single-player content ever.

Adventurers

 * Treasure is the glittering heart of Kobolds & Catacombs, but to truly capture the fantasy of delving into dungeons, you need Adventurers to go after the shiny stuff!

With the promise of treasure and riches, the Catacombs attract a wide variety of fortune-seeking adventurers, all part of an organization known as the Guild.


 * Boisterous Bard
 * Dragoncaller Alanna
 * Dragonslayer
 * Elven Minstrel
 * Kathrena Winterwisp
 * Lone Champion
 * Lynessa Sunsorrow
 * Marin the Fox
 * Master Oakheart
 * Silver Vanguard
 * Sonya Shadowdancer

Recruit

 * Recruit summons a random minion from your deck, and it shows up only on cards associated with the adventurer characters in Kobolds & Catacombs. Recruit introduces some interesting deckbuilding decisions, and because it sometimes comes with key limitations, such as mana cost, you’ll need to make careful choices about how many minions—and which ones—you include in your deck.


 * Cards with the Recruit keyword immediately summon minions from your deck and put them into play. Some cards recruit minions that match certain conditions; others recruit randomly chosen minions.


 * Call to Arms
 * Gather Your Party
 * Grizzled Guardian
 * Guild Recruiter
 * Kathrena Winterwisp
 * Master Oakheart
 * Possessed Lackey
 * Silver Vanguard

Kobolds

 * ''Kobolds are key figures in Kobolds & Catacombs; after all, they were the ones who dug all these miles of tunnels and chambers with their endless excavations. Despite living nearly their whole lives underground, kobolds don’t like the dark. They all wear a lit candle on their heads, and while they might jealously defend the piles of gold, jewels, and magical artifacts that can be found in their domain, every kobold’s most treasured possession is that bit of wax and wick.
 * If you venture into the catacombs, remember the refrain: You no take candle!


 * Cavern Shinyfinder
 * Cursed Disciple
 * Drygulch Jailor
 * Drywhisker Armorer
 * Fungalmancer
 * Geosculptor Yip
 * Grand Archivist
 * Gravelsnout Knight
 * King Togwaggle
 * Kobold Apprentice
 * Kobold Barbarian
 * Kobold Hermit
 * Kobold Illusionist
 * Kobold Librarian
 * Kobold Monk
 * Rummaging Kobold
 * Sewer Crawler
 * Shroom Brewer
 * Twilight Acolyte
 * Windshear Stormcaller

Monsters
No dungeon is complete without its wandering denizens of the deep, and as adventurers head further into the depths they'll find increasingly monstrous opponents.


 * Azari, the Devourer
 * Cave Hydra
 * Corridor Creeper
 * Dire Mole
 * Fal'dorei Strider
 * Feral Gibberer
 * Fungal Enchanter
 * Gemstudded Golem
 * Gilded Gargoyle
 * Hungry Ettin
 * Plated Beetle
 * Scorp-o-matic
 * Shrieking Shroom
 * Sneaky Devil
 * Stoneskin Basilisk
 * The Darkness
 * Toothy Chest
 * Trogg Gloomeater
 * Violet Wurm
 * Wandering Monster
 * Zola the Gorgon

Dragons
The dungeons are rife with enormous, ancient dragons guarding hoards of treasure.


 * Dragon Soul
 * Dragon Spirit
 * Dragon's Fury
 * Dragoncaller Alanna
 * Fire Dragon
 * Dragonhatcher
 * Duskbreaker
 * Ebon Dragonsmith
 * Hoarding Dragon
 * Sleepy Dragon
 * Temporus

Elementals
Ancient, powerful, and volatile, a number of elementals also call the catacombs home.


 * Arcane Artificer
 * Arcane Tyrant
 * Benevolent Djinn
 * Grumble, Worldshaker
 * Leyline Manipulator
 * Murmuring Elemental
 * Wax Elemental

Oozes
A number of oozes and slimes have found their way down into the dungeons.


 * Carnivorous Cube
 * Corrosive Sludge
 * Green Jelly
 * Seeping Oozeling

Traps
Guarding the treasures of the catacombs are a variety of deadly traps.


 * Crushing Hand
 * Crushing Walls
 * Explosive Runes

Treasure

 * Azeroth’s rat-like, candle-loving cave folk—the kobolds—have been digging deep beneath the surface for millennia. Their catacombs stretch on for miles, wending through forbidden tombs and breaking through the walls of long-forgotten treasure vaults. A hoard of glorious loot is there for the taking—if you can survive the dangers that lurk in those uncharted tunnels!


 * Golden Kobold
 * Tolin's Goblet
 * Wondrous Wand
 * Zarog's Crown

Legendary weapons

 * From mighty magic wands to staves dripping with awesome primordial power, razor-sharp blades to the swords of legendary heroes, the catacombs hold special arms for every class. With trembling hands, you reach for the lock...


 * Legendary adventures call for Legendary weapons! From mystical blades wreathed in eldritch energies to staves imbued with the wisdom of ancient ages, mighty magical weapons are the calling cards of great heroes.

In Kobolds & Catacombs, each class received a legendary weapon, even classes that have never received weapon cards before. This was the first time Legendary weapon cards were added to the game as collectible cards. Some of these weapons are based on the weapons from .


 * Aluneth
 * Dragon Soul
 * Kingsbane
 * Rhok'delar
 * Skull of the Man'ari
 * The Runespear
 * Twig of the World Tree
 * Val'anyr
 * Woecleaver

Spellstones

 * There are stories of mysterious stones imbued with strange magics that can be found within the catacombs. Rumor has it that the Spellstones were forged for a dark purpose, but for now, they lie in the dust, inert, waiting for someone to awaken their power.


 * ''"In ages old, when Ancients broke
 * ''Azari of the spoke
 * ''To tempt the mortals: gems of power
 * The weak succumbed, their souls devoured."

Spellstones are spells that become more powerful if the player fulfills certain criteria while the Spellstone card is in their hand.


 * Lesser Amethyst Spellstone
 * Lesser Diamond Spellstone
 * Lesser Emerald Spellstone
 * Lesser Jasper Spellstone
 * Lesser Mithril Spellstone
 * Lesser Onyx Spellstone
 * Lesser Pearl Spellstone
 * Lesser Ruby Spellstone
 * Lesser Sapphire Spellstone

Unidentified items

 * Unidentified cards gain additional characteristics beyond their “base” qualities when you draw them.

Representing the idea of finding an artifact in a treasure hoard but not knowing what it is, "unidentified items" are cards that gain one of several bonus effects once drawn from the player's deck.


 * Unidentified Elixir
 * Elixir of Hope
 * Elixir of Life
 * Elixir of Purity
 * Elixir of Shadows
 * Unidentified Maul
 * Blessed Maul
 * Champion's Maul
 * Purifier's Maul
 * Sacred Maul
 * Unidentified Shield
 * Runed Shield
 * Serrated Shield
 * Spiked Shield
 * Tower Shield +10

Rogue Secrets
Rogues have honed their cunning in the form of 2-Mana Secrets.


 * Cheat Death
 * Evasion
 * Sudden Betrayal

Lore

 * Official site
 * Drawn by tales of untold riches, you have gathered a party of bold adventurers to find fortune in the catacombs. Now, shadows dance as your torches flicker and you descend into the mines. Just then, a gust of wind snuffs out your light. In the sudden dark, you make out a faint glow ahead, coming closer. An all-too familiar cackle echoes through the gloom.


 * “You NO take candle!”


 * Announcement blog
 * Azeroth’s rat-like, candle-loving cave folk—the kobolds—have been digging deep beneath the surface for millennia. Their catacombs stretch on for miles, wending through forbidden tombs and breaking through the walls of long-forgotten treasure vaults. A hoard of glorious loot is there for the taking—if you can survive the dangers that lurk in those uncharted tunnels!

Part 1

 * ''“Tonight’s tale is about highest adventure and deadliest danger! It’s about heroes and villains, treacherous traps, hideous monsters, and—of course—treasure beyond imagination!”


 * ''The Bard’s voice cut through the din of the tavern as he spoke. Players laid down their cards, diners set down their forks, and Harth Stonebrew leaned against the bar, grinning. All eyes were drawn to the man standing before the hearth. The usual raucous laughter and friendly banter came to a halt as a hush fell over the tavern. Soon, all that could be heard was the crackling of the fire, and the subtle, mesmerizing melody that emerged from the Bard’s instrument as he played.


 * ''“A group of seasoned adventurers once delved into catacombs deep, in search of the fabled axe, Woecleaver! These heroes trekked through miles of mineshafts and tunnels chipped into the rock by busy kobold hands. They endured hardship, overcame dozens of deadly traps, and laid low scores of vicious monsters . . . but in the end? They failed, and hired someone else to get it!”


 * There were some wry chuckles from the audience, but the Bard was quick to speak over them, “This is the story of the man they hired. An adventurer’s adventurer, slicker than a greased murloc, and twice as slippery. A rogue, a thief, a treasure-hunting vagabond—and'' a hero! Of a sort. You may know him as Marin the Fox! And if you don’t? Well, by the end of my tale, you will!”


 * ''At the mention of Marin’s name, a chorus of cheers went up. A tale about Marin was always worth the listening.


 * ''“Let us set the stage. We join our hero deep in the catacombs. . . . “


 * ''Marin stepped into a large, stalactite-studded chamber and found that the path ahead was slashed in half by a deep chasm. The roar of an underground river could be heard far below, and mist rose from the depths to add a ghostly cast to the clusters of glowing blue crystals that sprouted from the walls. Lava oozed from a boarded-up hole in the wall of the cavern, lending the cavern a ruddy glow and mingling a sulfurous stink with the sweeter scent of water. Marin idly wondered how the planks blocking the molten rock avoided burning to cinders, and considered his options.


 * ''Fortunately, a bridge forded the river-carved rift ahead. Unfortunately, it was a knotted assemblage of fraying rope and weathered wooden boards hanging precariously over a dizzying drop. And there were no hand rails. Of course.


 * ''It didn’t look promising, but poison gas had flooded the only other route Marin was aware of, and backtracking would take hours. From the looks of the hastily-blocked lava tube, this path might not last much longer, either. The catacombs were like that—a little different every time you returned. And Marin returned often.


 * ''While the lure of riches was always enough to provoke a dungeon run on its own, this one had a special purpose. An old friend had asked Marin for help retrieving the legendary axe, Woecleaver. He recalled Oakheart’s words from a few days ago. . ..


 * ''“The Guild needs that axe, and we just can’t find the blasted thing. Aye, we spent weeks searching the catacombs and turned up nothing but kobolds and more kobolds. Everyone knows you’re the best, Marin, and I need your help. So, what does ‘the’ Fox say?”


 * ''“The Fox says, ‘How much does it pay?’”


 * Turns out it didn’t pay anything, but Oakheart had heard a rumor that Woecleaver was stashed with another treasure, one Marin had been after for some time—a large chest said to contain items of particular'' interest. Marin had agreed, and now here he was, faced with a marvel of kobold “engineering.”


 * ''The ropes groaned and the “bridge” danced drunkenly underfoot as Marin gingerly committed his weight to the splintering wood. The chasm yawned below, distressingly visible between the wide gaps in the planks, and a breeze whistled upward from the depths to tug him this way and that. With every nerve-wracking step, he tried his best to not imagine the bridge abruptly dropping out from beneath him.


 * ''As he neared the middle, a group of kobolds sprang from the tunnel entrance Marin was creeping toward. An ambush! Though, thankfully, not a very effective one—the kobolds revealed themselves too early and just stood around in plain sight. Still, there were several of them, and only one Marin, halfway across a decaying bridge that could give out at any moment. Not an ideal situation!


 * ''One of the kobolds was larger than the rest (which isn’t saying much), and this one sported a crown with an actual lantern in place of the typical kobold candle. The miniature monarch was rather more rotund than his fellows too—no doubt there were culinary benefits to being king.


 * ''The crowned kobold said something to one of his followers, then prodded it forward onto the swaying bridge. The additional weight was enough to make the fraying ropes groan in a most alarming way. Marin gritted his teeth.


 * ''The small kobold wrung its paws, puffed up its chest, and spoke, “Y-you. You Adventurer. . . .”


 * ''Confronted by a fully-armed hero who was much larger up close, the kobold forgot its lines. At a loss, it fell back on the classics. “You no take candle!”, it squeaked, then scampered back to the safety of its fellows.


 * ''The crowned kobold rubbed a paw across his face in exasperation. “I be King Togwaggle!” he shouted, his voice echoing oddly in the cavernous space. “These is being MY tunnels! YOU be dropping treasures now!”


 * Marin arched an eyebrow. “There’s a snag in your plan, your Highness. You see, I don’t have'' any treasure yet. How about you let me by, and I’ll go get some. Then we can have a do-over on my way out?”


 * ''Several of the kobolds saw the wisdom in this suggestion and nodded happily, candle flames bobbing. Their king, however, was not so easily convinced. Togwaggle’s eyes glittered malevolently. “If you not be dropping, kobolds be taking!” he shrieked, fist raised, “BE SUMMONING THE GOLEM!”


 * ''The audience gasped. Tavern chairs squeaked as patrons leaned forward, hanging onto the Bard’s every word. There was a long pause as the spell broke, and then someone asked, “Well?! What happened next?”


 * “Telling stories is thirsty work, friend. Think I’ll be taking a short break,” the Bard winked in reply. He dragged a large cauldron across the tavern floor. Scrawled across the black iron in white paint were four words: ‘HUZZAH FOR THE TIPPER’.

Part 2



 * ''“When last we left Marin, our intrepid hero was in quite the predicament: stranded on a failing rope bridge over a deep chasm, with his only path forward blocked by unfriendly kobolds. To make matters worse, there were strange, new magics afoot!”


 * ''The Bard began to play a fast, tense melody on his lute, the strings singing of danger. “The Kobold King demanded a golem, and his minions obeyed. Huge, yellowed candles on their heads dripped melted wax and they began to chant. . . .”


 * ''King Togwaggle grinned in wicked satisfaction as his waxmancers cast their spell. Hot wax ran in streams from the candles they wore atop their heads, but the candles did not shrink. Instead, seemingly endless runnels of wax wormed their way to pool together unnaturally. Marin watched with mounting concern as the wax flowed together into a humanoid shape a full head taller than himself. Finally, the suggestion of a face appeared, with lit candlewicks for eyes. Burning eyes fixed on Marin, the golem took a step onto the bridge.


 * ''“A candle golem. Of course. I don’t know what else I was expecting from kobolds.” Marin muttered.


 * Togwaggle cackled in delight. “You no take this'' candle, stupid adventurer!”


 * ''The old ropes creaked like a rusty hinge as the bridge sagged under the golem’s weight, and Marin was convinced he heard something snap. He backed away as the golem advanced. He’d never imagined that the simple-minded kobolds had been cooking up spells like this! But he had no time to ruminate on kobold ingenuity; he needed to deal with the golem quickly—the bridge creaked and juddered with every step the waxy monstrosity took.


 * ''Marin drew his sword as the golem lurched toward him, slashing experimentally when it came into range. His blade passed through the warm wax of its body with little effort, but the wounds left by his blade closed almost as soon as he made them. The kobolds let loose a ragged cheer.


 * The hulking wax golem reached out to grab Marin with its blocky hands. Marin dodged easily—the golem was clumsy and slow. But it was'' relentless. Marin cut it a dozen times, but the golem kept coming, its candle-flame eyes glowing brightly in the gloom.


 * ''It had eyes! That gave Marin an idea. He waited a breath, and let the golem get close. As it swung its arms out to grab him, Marin ducked into the golem’s embrace. At the other end of the bridge, the kobolds whooped and hollered, thinking that the foolish adventurer had made a fatal mistake.


 * If the golem was capable of expecting anything at all, it wasn’t expecting that. It overreached, its massive arms passing harmlessly to either side of the adventurer. This close to the thing, Marin could feel its unnatural warmth, and the smell of burning candle wax was overpowering. Before it could close its arms around him, Marin took a deep breath and blew''. The candle flames in the golem’s eye sockets guttered out, releasing thin tendrils of smoke. It reared back in surprise, blinded and its prize forgotten—just as Marin had hoped. The kobolds groaned in disappointment.


 * ''Marin took advantage of its distraction to sheathe his sword and slip over the edge of the bridge. His stomach lurched as he swung down and dangled from one of the fraying ropes, the depthless chasm seemed to reach up and grasp at his boots. He swallowed and worked his way past the groping, flailing golem, careful not to get his fingers stomped as he edged past. He forced himself to give it a wide berth before levering himself back up onto the tortured span with a sigh of relief. He wasn’t far from the kobolds now. As he stood to face them, he drew and leveled his sword at the creatures. Time to say something dramatic and intimidating!


 * ''“Huh. . . . Do you hear that?”


 * ''Marin felt the hair rise on the back of his neck. He faintly heard an unnerving, dissonant babbling, as if from many mouths, echoing from the tunnel behind the kobolds. The kobolds exchanged expressions of horror. In all the excitement of cheering for their wax champion, they’d neglected to listen for other dangers. “Feral gibberers!” King Togwaggle gasped, fleeing to the bridge and leaving his subjects behind without a second thought.


 * ''The kobolds scrambled after their king, pushing past the adventurer onto the bridge in a mad dash to escape whatever was coming. The other end of the bridge was still blocked by the blinded golem, so they huddled behind Marin for protection, evidently forgetting their previous conflict in the face of a greater threat.


 * ''Marin rolled his eyes, working to keep his balance as the kobolds jostled him. “Are you serious? This isn’t going to work, you candle-tipped nitwits! The bridge can’t hold us all!”


 * ''The bridge agreed. It had bravely withstood the weight of a full-grown man and an overgrown candle monster. It had even put up with Marin’s gymnastic antics. But the weight of a party of quaking kobolds plus a golem and a hero was simply too much. The ropes released a long, crackling groan.


 * ''“Hold on!” Marin screamed. He dropped his sword and scrabbled for something to grab onto, but he was too late. The ropes beneath the golem gave way, cracking like a giant whip, and they all—adventurer, kobolds, and golem—plummeted into the murky blue glow of the chasm.


 * ''“They’re not dead.” The Bard told the wide-eyed audience. “Some of you look very concerned. I just wanted you to know that they live through this. The river isn’t as far down as it seems, and it runs deep.” The Bard chuckled, “Who kills the hero halfway through the story?”


 * He propped a boot on his black iron tip cauldron. “Now, that doesn’t mean all is well and good. Not at all. Things are about to get interesting.” The Bard smiled mysteriously. “I’ll just rest my voice a bit—I’m a little parched—and then you’ll find out what I mean.”

Part 3



 * ''The Bard plucked at his lute, playing notes that conjured an eerie foreboding from its strings. Delighted that the tale teller’s break was at an end, the tavern’s denizens gave him their rapt attention as music filled the air.


 * ''“Now, as I was saying, the misty depths of the chasm disguised how far down the river was. Quite a drop, no doubt, but not lethal. Marin was flung into that chilly tumult, tumbled and tossed, soaked to the bone. He caught a breath whenever the river would allow as it sped him through tunnel and chamber, ever downward—as all rivers run—deeper into the catacombs. The river spent its strength and grew sluggish and shallow enough for our hero to drag himself ashore. . . .”


 * ''The tumultuous trip downriver had been quite a ride, so Marin allowed himself some time to cough up a few buckets of water and catch his breath. He assessed the damage (wounded pride, some bumps and bruises), then got his bearings.


 * ''The river had deposited him on the edge of a cavern blooming with huge, glowing blue and purple mushrooms, and the air was thick with the rich, slightly acrid scent of them. He’d heard of such places—groves of glowing fungi with strange properties scattered throughout the catacombs—but he hadn’t had much occasion to explore them. The feared Fungal Lord Ixlid was rumored to frequent such places, which Marin felt was an excellent reason to avoid them.


 * ''As he crept among the oversized fungi, one of the mushrooms uprooted itself and toddled in Marin’s direction. It was almost cute, but Marin hadn’t remained in one piece all these years by trusting appearances. He kept his distance and tried to shoo it away.


 * ''“Surely you have better things to do? Vital mushroom business, perhaps? Over in that direction?” Marin said, hoping to dissuade the odd, squat creature’s approach.


 * ''The mushroom creature looked up at him as he spoke, and tipped its head to the side quizzically. It paused for a heartbeat, then it let loose a deafening, skull-piercing, shriek. The sound hit Marin like a physical force, and he stumbled away from it, wincing and clutching his ears.


 * ''Such a cacophony was sure to summon unwanted attention! Plugging his ears, Marin fled from the noise into a nearby tunnel, pursued by its shrill echoes.


 * ''As he put more distance between himself and the creature, the noise finally faded. Eventually, whole minutes passed in blessed silence. Marin allowed himself to breathe, thinking that perhaps he’d gotten lucky, and that the abominable shrieking somehow hadn’t attracted any passersby after all.


 * ''“Avast, ye tunnel lubber!” came a call from the tunnel behind him.


 * ''He was wrong.


 * Whenever Marin entered the catacombs, he expected'' to be surprised. Even so, the place still managed to catch him off guard from time to time. A kobold swaggered down the corridor toward him, waving a cutlass and dressed head to toe in the regalia of a ship’s captain. One of his hands had been replaced with the head of a mining pick. His captain’s hat bore a candelabra’s worth of lit candles, and more were woven into his whiskery beard, wicks burning.


 * ''Marin crouched into a fighting stance as the outrageously dressed newcomer and a motley assortment of equally eccentric followers approached. The kobold gave Marin a once-over with a delighted expression on his ratty face and sheathed his cutlass. “Well snicker me whiskers! Ye be a fellow pirate!”


 * Marin didn’t understand it. For some reason, strangers mistook him for a pirate all the time'', despite the fact that he’d never set foot on a boat larger than a canoe in his entire life. Still, there could be an advantage in playing along. The kobold would surely know the area, and Marin might get an opportunity to “replace” some of the useful tools he’d lost to the river.


 * ''“Yes. Uh. . . aye. I’m definitely a pirate. Starboard! Yo ho, poop deck, rum, and so forth!”


 * ''The kobold narrowed his eyes and nodded, as if considering the wisdom of Marin’s words, then broke into a gap-toothed grin. “I be Captain Candlebeard. Welcome to the crew!”


 * ''Candlebeard gestured expansively with his pick-hand to the ragtag assortment of outlandishly-dressed kobolds that filed up behind him. None of them looked the least bit like a pirate, but that didn’t seem to bother Candlebeard.


 * ''“Back to the ship, ye scallywags! Mind the violet wurm burrows to the larboard side!”


 * ''The crew of “pirates” marched their way from fungal forest through a procession of corridors, the natural stone tunnels they traveled eventually giving way to timber-supported mine shafts. Candlebeard happily spouted nautical nonsense at Marin all the while, and it was obvious that Candlebeard knew even less about real piracy than Marin did, which left Marin wondering how the kobold had adopted the pirate persona to begin with. The answer soon became clear.


 * ''They emerged into a mined-out cavern—it was like a hub, with several smaller tunnels gaping in its walls. The space was dominated by the imposing bulk of a derelict pirate ship, resting at an angle against the cavern wall. Clusters of burning candles cast flickering light from its railings and masts, and the windows of the captain’s quarters glowed fitfully from within. Its ghostly tattered sails and a moth eaten black flag (painted with a candle and crossed bones, naturally) stirred in a steady draft. Marin couldn’t begin to guess how the ship had become interred here, deep underground and miles from the ocean.


 * ''Candlebeard led them aboard and into the captain’s quarters. Very little of its former grandeur remained and there wasn’t much furniture: a captain’s table with a throne-like captain’s chair, and a weathered treasure chest. A map pinned to the wall caught Marin’s eye. There was a large dragon drawn on it, and Marin had seen a similar map before. He suspected that it charted a path to the lair of Vustrasz the Ancient, the most powerful and cantankerous dragon in the catacombs, famed for both his temper and his treasure hoard.


 * ''Candlebeard thrust his cutlass at the image of the dragon in the center of the map.


 * ''“Ye joined the crew just in time!” Candlebeard announced with a manic gleam in his eye. “We’re going to pillage a dragon treasure!”


 * ''“. . . .And we need bait!”


 * ''“Alas, poor Marin, always going from the cauldron straight into the flame.” The Bard lamented. “And when it comes to Vustrasz the Ancient, I mean flame quite literally. But don’t you worry, Marin is sharp one, and we’ll soon find out how he handles Captain Candlebeard!” The patrons cheered, thumping their tankards on tables and stomping the floorboards.


 * The Bard peered into his tip cauldron and appeared a little crestfallen. “But not that soon. Time for a break!”

Part 4

 * ''The Bard began by playfully plucking out a sea shanty on his lute. “Marin had, quite by accident, joined the crew of a mad kobold captain who intended to relieve an ancient and unusually angry dragon of its treasure.”


 * ''He chuckled, and the music picked up in tempo. Every patron in the tavern felt their heart swell, and they stomped and clapped in time with the music. The Bard’s fingers danced on the strings, and he sang a song of flashing blades and swashbuckling heroics.


 * ''“But while the avarice of the candle-covered captain spoke to Marin’s soul, his role for Marin in the caper was not to our hero’s fancy. The only answer? MUTINY!”


 * ''Bait? Marin didn’t much like the sound of that. The time for playing the part of dutiful crew member was at an end. Quick as a scorpid’s sting, Marin grabbed the hilt of Candlebeard’s cutlass with one hand, then delivered a ringing right cross with the other as he pulled the blade from its scabbard.


 * ''Candlebeard staggered, clutching his snout in pain and groping for a cutlass that was no longer there. Finding that he’d been disarmed, the kobold pirate tried to flee, but Marin was far too quick. He flipped deftly over the kobold’s head and intercepted him with the point of the blade. Candlebeard raised his paws in surrender “Well, I’ll be scuppered.”


 * ''Marin swept his newfound blade into an elaborate duelist’s salute and addressed the “crew”. “Listen well, you piratical candle-heads! This is a mutiny!”


 * ''“I’m in charge, now!” He leveled his blade at Candlebeard. “Throw this one in the brig!” The crew milled around anxiously, adapting slowly to the sudden change in leadership.


 * ''“WELL? GET TO IT, YE BILGERATS!” Marin howled. The crew jumped and rushed to obey, bundling Candlebeard out of the room as he heaped an impressive array of curses on them.


 * ''Marin grinned and began looting the room. He didn’t intend to stick around while his orders were carried out. His stint as a pirate only had to last long enough to snatch the map and whatever other loot he could find among Candlebeard’s belongings.


 * ''Moments later, Marin left the pirate ship behind, new cutlass tucked into his belt, map in hand, and a glowing satchel he’d found hanging over his shoulder—something about it made him suspect it was larger on the inside than it was on the outside.


 * ''He picked a direction, rolled up the map, and started moving. He stuffed the map in the satchel, but felt an obstruction. Odd—it appeared empty when he’d liberated it. Rifling inside, he gathered up a fistful of soft fabric and. . . his hand disappeared! An invisibility cloak! A delightful surprise, and an even greater treasure than the satchel! Gleefully, he swept the cloak around his shoulders, flipped up the hood, and faded from view.


 * ''As he traveled and the terrain changed from natural caverns to finely worked white stone corridors, Marin reflected that the catacombs had a kind of geography to them, with perils to match. The troggs had established a kingdom here, a tangled lair of giant roots full of s grew there. Delve deep enough and you might even find a dragon. Speaking of which, after some twists, turns, and a few secret passages, he’d finally arrived at the glowing portal that should take him to his destination. Marin steeled himself and stepped into the light.


 * ''His stomach did somersaults as he passed though the portal. He emerged in a realm of giants. . . . if the giants had picked up and moved on eons ago, but forgot to turn off the lights.


 * ''Enormous white pillars lined a hall so large it could swallow a small castle with room to spare. Ornate geometric bas-reliefs crafted from an unfamiliar metal adorned the walls, and some of the elaborate stonework glowed mysteriously from within. There were alcoves, some containing figures that could be guardian statues, while others housed luminous figures that looked like constellations.


 * ''Marin noted a tension in the air, like an approaching thunderstorm brewing, and the hairs on forearms stood up. He felt like a mouse creeping through an abandoned manor, hunted by an unseen cat. Marin shuddered. Given the choice, he always preferred to be the cat.


 * ''It made sense that Vustrasz had made his lair in the former abode of s, though. This was one of the few places in the catacombs with space to spare for a venerable red dragon. The lair wasn’t far, according to the map. Marin just needed to climb a device that appeared to be an animated model of the celestial spheres, and clamber through a window. . ..


 * ''The peaked window looked out over a vast chamber—even larger than the hall he’d just left—and Marin found himself dazzled by reflected, golden light. The chamber was piled high with gold coins, sparkling gems the size of his head, ornate arms, armor, and countless other precious treasures. Marin blinked, dazed both by greed and the lustrous beauty of it all. He picked up a necklace with an enormous ruby pendant, admiring the way the gem caught the light before putting it on. This was the very shining stuff every dungeon delver’s dreams were made of!


 * ''He fought the impulse to take a running leap into a pile of coins. For one, he knew from experience that swimming in coins was rather painful. But also, Vustrasz the Ancient, known for his fiery breath and equally fiery temper, was slumbering peacefully on a pile of riches in the center of the chamber.


 * ''Marin was also disappointed to note that Vustrasz was not the hoard’s sole occupant. King Togwaggle was overseeing a swarm of kobolds, who were quietly affixing ropes to a monolithic treasure chest. Rotten luck that the bloated little monarch had survived, let alone shown up to steal from the very same hoard Marin was trying to rob.


 * ''And yet, the Kobold King’s presence might provide a useful distraction. . ..


 * ''Enjoying the benefit of invisibility, Marin spoke confidently, “Hey Togwaggle. I found that treasure you were looking for.”


 * ''Togwaggle gasped and peered about. Recognition blossomed on his face. “Stupid adventurer!” he hissed. “You is being too loud, be waking dragon and killing us all!”


 * ''“Us? I doubt it. You and your lot? Seems likely!” Marin strolled closer to the dragon’s head and raised his voice to a shout. “Ancient Vustrasz! I am your humble and virtuous servant, Marin the Fox! Wake and heed my warning!”


 * ''The huge dragon stirred, shifting on his bed of coins. The kobolds began desperately heaving at the ropes. Togwaggle wailed, “Human is crazy! Be getting treasure and be going, fools!”


 * ''The dragon stirred, but did not awaken.


 * ''Marin tried a different tack. He flipped the hood of the cloak back, rendering himself visible, and thumped on the dragon’s snout. “Hello? Vustrasz! Thieves! There are thieves in your treasure hoard!”


 * ''The dragon’s great golden eye snapped open. Marin had heard that red dragons were wise, and among the least likely to roast humans on sight. Nonetheless, he was painfully aware of his proximity to a set of jaws that could snap him up in a single bite. The dragon’s huge pupil contracted and fixed on Marin, who smiled and pointed helpfully in the direction of the kobolds.


 * ''The dragon heaved himself to his feet, sending gems and coins flying while Marin took cover.


 * ''“Thieves! Wretched looters!” the dragon roared. “You will pay for your greed!” The kobolds scattered in terror. The dragon bounded to the chest, clasping it in his claws, and loosed a torrent of flame at the fleeing kobolds.


 * ''“Yes, that will do nicely,” Marin thought. He hummed happily, to an accompaniment of shrieks, roars, and flame. He strolled the vast hoard, dropping choice pieces of loot into his satchel, which, it turned out, was in fact bigger on the inside! He was about to make his getaway when he spotted something that stole the breath from his lungs: the unmistakable form of Woecleaver, peeking out of a tall mound of gold coins! He couldn’t believe his luck!


 * ''It wouldn’t take the dragon long to finish off the kobolds, but this was a risk worth taking. He had to go for the axe! But hiking through a mountain of treasure is harder than you’d think. Mere steps before reaching his destination, Marin heard the whoosh of vast wings and an enormous red-scaled bulk filled his vision. Vustrasz had landed—right between him and the axe.


 * ''“Thank you for your timely warning, little man,” the dragon’s voice boomed. He craned his great head down to look Marin in the eye. “You are unusually honorable for one of your kind. Why, you’ve barely stolen anything at all.”


 * ''Marin stood dead still as a drop of sweat trickled down his brow. The dragon was toying with him.


 * ''“Oh? What is this?” Vustrasz reached out and plucked the satchel from Marin’s shoulder. He dangled the bag between two huge claws with surprising delicacy and shook it. It jingled. The dragon cut a slit into it with the flick of a claw. They both watched an improbably long stream of coins, gems, and other treasures pour out of the bag.


 * ''“I’ll just be going, then?” Marin squeaked.


 * ''“I think you should.” the dragon rumbled, and began to take a deep breath.


 * ''Marin flipped up his hood and popped out of sight, his disappearance catching Vustrasz by surprise. The dragon missed, and blasted the spot Marin had just occupied with a jet of flame.


 * ''“Show yourself, wretched thief!”


 * ''Marin did not show himself. Instead, as he ran, he snatched up a shield, tossed it face down onto the coins, and leapt on top of it. As if he were sledding on snow, he rode the shield down the sloping mound of treasure.


 * ''The shield betrayed Marin’s location though, and he heard a deafening roar as Vustrasz let loose another great gout of dragonfire. With miraculous timing, Marin clutched the corners of his cape and spread it like a sail to catch the blast wave as it arrived. Even so, the force of it nearly knocked Marin off of his feet. He fought desperately to keep the shield beneath him as the wave of searing air propelled him ahead of the flames with incredible speed.


 * ''With a combination of skill and luck, Marin guided his shield clear across the hoard and through an open doorway—one blessedly too small for the dragon. He shot out of the opening like a cork from a bottle, riding the skidding shield across the smooth stone floor. When his makeshift conveyance lost momentum, he leapt off and ran till he was out of breath. Then he ran some more. Then he crawled for a while, and hid. Once he was sure that the dragon wasn’t in pursuit, he allowed himself to stop and marvel at his luck. He was singed and largely loot-free, but still alive. After running up against a dragon? That was a good day.


 * ''He hadn’t been entirely successful in his mission, but Marin consoled himself with the fact that this wasn’t the end of the adventure. Quite the contrary—it was just the beginning! Time to head back to the tavern to gather Oakheart and the rest of the guild. The kobolds, the catacombs, and that glorious, glorious treasure would be waiting.


 * ''The Bard took a deep bow as the tavern erupted into hearty cheers. He basked in the appreciation, but soon enough, it was back to business as usual: card games resumed, drink orders were placed, and friendly laughter could be heard all around.


 * ''Satisfied, the Bard packed his instrument in its worn leather case. It was good to see happy people, and he loved to spin a yarn here. The crowd was always warm and the brew was crisp and cold. Now to count the night’s take!


 * ''He peered into the cauldron and, for the first time ever in his career as a troubadour, was struck speechless. He reached inside, and from among the gold, silver, and copper, retrieved a golden necklace with an enormous ruby pendant. His eyes darted over the bustling tavern crowd, but of course, there were no clues as to who left the jewel. The Bard began to chuckle.


 * Then he laughed. He laughed long and loud.

The Spellstones
Written by Dave Kosak, the flavor text of the Spellstone cards form a poem, which is to be read as followed:

In ages old, when Ancients broke

Azari of the Legion spoke

To tempt the mortals: gems of power

The weak succumbed, their souls devoured.

To dwarves of stone the demon called

With promises of might, enthralled

In grasping greed they found their doom

Forever bound in mithril tombs.

In ancient woods, elves fought the curse

The demon’s shadow to disperse

But hatred raged and frail souls turned

Now horned and hooved their forests burned.

The trolls of old embraced the gift

A jewel of black for daggers swift

No party lasts who finds the stone

Those wielding it soon stand alone.

A stone of blue, embraced with glee

By murloc lords beneath the sea

Soon numberless they swarmed the shore

First two, then four, then more...and more...

A purple stone Azari carved

For dark hearts, craving, power-starved.

The first to bow, the warlock Rin,

Embraced the darkness, slew her kin.

An emerald stone for Tauren hands

Who sought its strength to save their lands

Their tribes now lost, their rage released

''Who’s hunting now? And who’s the beast?''

A diamond, white, this stone the eighth

A precious jewel for those of faith

A whispered prayer restores the lost

But none among them know the cost.

The final stone undid its master

Spun into wards by nameless caster

Azari wailed a savage roar

Now sealed in nether, evermore.

In World of Warcraft



 * s are a race of diminutive, rat-like subterranean humanoids who dwell in and around caverns and mines throughout the, and the . They are not particularly intelligent and are notoriously cowardly, preferring to keep their distance from other, larger races. Kobolds are famous for being obsessively protective of the candles they wear upon their heads and which help them light their way through the dark tunnels they call home.

Development
Designer Peter Whalen described the creation of Kobolds & Catacombs as follows:
 * "For every expansion, a bunch of us get together in a room, and we talk about what's next. We'd just done Un'Goro with its enormous dinosaurs. We'd done Knights of the Frozen Throne with the Lich King and his horrible undead minions. So we wanted to do something a little different, something a little more whimsical, a little more classic Warcraft. So someone pitched: 'What if we did the treasure set?' Hm. Treasure set sounds pretty cool. And so, we were on board, we were going to make the treasure set. And that is how Blingtron's Lootapalooza was born. That's right, Blingtron's Lootapalooza. We were going to explore the history of 's most enigmatic treasure golem. We even talked to some people on the World of Warcraft team, and put the art from Blingtron's card image in our Year of the Mammoth preview. But the more we explored Blingtron's Lootapalooza, the less we liked Blingtron as the heart of the set. We really wanted to do that classic dungeon dive, that feeling of going deep underground and unearthing amazing treasures. That's how we hit on the kobold. These are the little rat creatures from World of Warcraft. They've got candles on their heads that they absolutely love, they've got treasure that they mine in the earth, and so, they were perfect for us. They were going to build us the ur-dungeon, the dungeon that contained all other dungeons inside of it. They would build us the Catacombs."

According to Art Director Ben Thompson, it was "super important" to the art team to figure out what the expansion's main setting — the Catacombs — were going to look like, not just for the design team, but for the players as well. The team took it upon themselves to understand the mind of a kobold, and concluded that kobolds are likely very single-minded, direct in their thought, and likely not thinking too clearly or too straightly when building. The team strived for each part of the dungeon to always "point to this feeling of kobolds", whether it be hastily constructed rope bridges, shoddily repaired lava breaches, idols to ancient kobold gods, or wondrous beasts enslaved and/or hired to protect treasure.

Becca Abel described the expansion as "If this is a love letter to the classic dungeon crawl, it's a love letter written by candlelight".

When the design team sat down at the beginning of Kobolds & Catacombs, they wanted to figure out the core fantasies of treasure and what makes treasure so cool. They came to two conclusions: anticipation and progression. Unidentified items hit on the feeling of anticipation, making players hope they'll get the ideal one. The team wanted to express progression through the feeling that as the player finds treasure, their character gets stronger and, in turn, finds even more powerful treasure. This was expressed through the Spellstones, spells that can become more powerful while in the player's hand.

The unidentified items presented a challenge to the art team, as Blizzard was essentially telling them "Draw a thing, but don't show people what it is!". The way the team solved this was by depicting the objects as being wrapped in a shroud to obscure their identity.

Spellstones presented a challenge in communication, both for the player and for the opponent, so that both players properly understand what just happened. It was important that each Spellstone felt very specific to its respective class, as well as feeling as though they were "leveling up" and getting more powerful by having three clearly defined states. This ended up being a practice in different silhouettes, colors, and slightly different palettes, all of which helped achieve a sense of progression. The developers had a couple of goals with the Spellstones: they wanted to support new deck archetypes, to give more players more options for customizing their decks, and to tell a cool story about "some awesome treasure you find while adventuring". The team initially started out with around 4 Spellstones, but as they really liked the mechanic they gradually increased the number of them in the set. At the time, there was a mix of different Spellstones, some of which tracked over the course of the game while others had conditions that needed to be fulfilled in a single turn. The latter allowed players to potentially get really lucky early on and upgrade their Spellstones in their first couple of turns, allowing them to easily steamroll their opponent. The Spellstones that tracked over the course of the game, on the other hand, were much more fun to play and their power levels could be tuned much more accurately, making games "less of a blowout" and making playing both with and against them more satisfying.

While the Spellstone mechanic was established early on, the individual Spellstone cards took a lot more time to design. The team had three different types of Spellstone they wanted to pursue: ones that could be put into existing decks and encourage players to slightly tweak the decks (such as Lesser Diamond and Lesser Jasper Spellstone); ones that could be put into any deck, but would require an accompanying package of cards to make work (such as Lesser Amethyst, Lesser Emerald, and Lesser Mithril Spellstone); and lastly, ones that would inspire entirely new deck archetypes (such as Lesser Onyx and Lesser Sapphire Spellstone).

One of the design challenges faced by the team during the development of the expansion was the legendary weapons. It's very important to the developers that each class in Hearthstone feels distinct, with some classes having weapons and others not. In order to get this across, the legendary weapons for the "caster" classes — mage, priest, and warlock — all have 0 Attack. Early on in development, these weapons lacked the Attack and Durability stats altogether; this idea was scrapped, since it "felt pretty weird" in playtesting, but the sense of that idea was retained by giving the weapons 0 Attack.

Blizzard wanted to explore what the dungeon looks like from the point of view on the lowest monster on the totem pole. They gravitated toward kobolds for a couple of reasons: they're "the kind of small monster that you might find in all kinds of dungeon environments", and there's something "uniquely Warcraft" about the Warcraft kobold, their candle-wearing tendencies, and their iconic "You no take candle" catchphrase.

Teasers
On Thursday, February 16th, Blizzard announced on the official Hearthstone website the changes coming with the Year of the Mammoth, the second year of standard format. The announcement post included a teaser image for the planned main events of the year, including "Expansion III" in the year's fourth quarter, the image for which featured a sack of gold coins in front of a faded background image of entire mountains of treasure; however, this was actually a remnant from when the year's third expansion was planned to be Blingtron's Lootapalooza, rather than Kobolds & Catacombs.
 * Year of the Mammoth announcement

On October 24th, Blizzard announced the teams that would be competing in the Hearthstone Inn-vitational at BlizzCon 2017: the Jungle Giants, the Big-Time Buccaneers, the Grimestreet Grifters, and the Chillblade Crusaders. Three of the four teams appeared to correspond to the major themes of three previous Hearthstone expansions:
 * Hearthstone Inn-vitational


 * Grimestreet Grifters - Mean Streets of Gadgetzan
 * Jungle Giants - Journey to Un'Goro
 * Chillblade Crusaders - Knights of the Frozen Throne

This led to speculation that the fourth team, the Big-Time Buccaneers, was hinting at the theme of the next and as of yet unannounced expansion.

On October 10th, Blizzard revealed the in-game items that would be rewarded to purchasers of the BlizzCon 2017 Virtual Ticket. The Hearthstone reward was announced to be a "Mystery Goodie" in the form of an unrevealed golden legendary card, accompanied by the description "What’s on deck for Hearthstone players? The Innkeeper’s not quite ready to show his hand quite yet!".
 * Marin the Fox

On October 27th, the identity of this mystery card was revealed on Twitter as Marin the Fox, accompanied by the description "Adventure! Danger! Derring-do! TREASURE! Meet Marin the Fox!", and on October 30th, it was confirmed that the upcoming expansion, as well as the full details on Marin, would be revealed at the BlizzCon Opening Ceremony.

Announcement
Kobolds & Catacombs was officially announced by Game Director Ben Brode during the Opening Ceremony of BlizzCon 2017 on November 3. After the screening of the official trailer, Brode took the live audience on a "quest" by allowing them to choose which cards to reveal.


 * "So what kind of cards can you expect from Kobolds & Catacombs''? I'm not gonna tell you. I'm gonna let you discover the set for yourselves. Steel yourselves, adventurers, we're going in!
 * Okay, you're in the entrance to a dungeon on a quest to find legendary treasure. To your left is a tunnel. Stinky goo lines the floors and walls. To your right is a massive door with a huge lock, but the lock is broken. Where do you wanna go?"

Though both sides were fairly even, the part of the audience who wished to go through the tunnel won out.


 * "So, you slide through the tunnel, and into a room with a huge ooze creature lying dead on the floor. Prying a chest from its remains is the legendary adventurer Marin the Fox!"

After showcasing Marin and revealing that all players who logged in starting Monday, November 6, would receive the legendary for free, Brode resumed the quest.


 * "Okay, back to the dungeon. Marin winks at you and escapes with the treasure. You see two doors in front of you. To your left is a door with a sign on it that says 'Kobold Treasure Hoard - Adventurers Keep Out!'. To your right is a door with the words 'CERTAIN DEATH' scrawled on it. Where do you wanna go?"

The audience overwhelmingly picked the right door, much to Brode's bewilderment.


 * "Okay, so your party enters the room, and as you do, the walls start closing in, crushing half of your party! What did you expect?! So, everybody from here to here, you're all dead. On the bright side, you found another new card - Crushing Walls!
 * Alright, you guys are gonna have to recruit some new party members to finish the dungeon. Fortunately, the new keyword in Kobolds & Catacombs is Recruit!"

After showcasing the Crushing Walls and Gather Your Party cards, the latter with the new 'Recruit' keyword, Brode continued with the last part of the dungeon.


 * "Alright, you can tell that you're close to finding the legendary treasure. This next decision is very important. To your left is a hallway where claw marks mar the entrance. To your right is another hall THAT IS LITERALLY ON FIRE! Where do you wanna go?"

Once again, the audience overwhelmingly chose the right option.


 * "So, you run through the hallway, burning away most of your clothes, and you enter a room filled with kobold candles surrounding a pedestal with a glowing disk atop it. It's the legendary treasure you were searching for - the priest card, Dragon Soul!"

After directing audiences to the "What's Next" panel later that day to discover more cards, Brode showcased the new Dungeon Run single-player experience. At the "What's Next" panel, Lead Mission Designer Dave Kosak, Art Director Ben Thompson, and Initial Designer Peter Whalen presented the story and development of the expansion, as well as showcasing artwork and several new cards.

Card reveals
Starting November 20, cards from the expansion began being revealed one at a time through selected fansites and streamers. On November 17, Blizzard unveiled the schedule for the card reveals set to take place during the first week of card reveals.

On November 20, the Kobolds & Catacombs card reveal season began with a special card reveal livestream featuring Peter Whalen and caster and streamer Brian "bmkibler" Kibler. The stream showcased 9 new cards, including two of the first-ever Rogue Secrets as well as the two legendary cards The Runespear and Kathrena Winterwisp.

On November 24, the schedule for the card reveals set to take place during the week of November 27 was posted.

On November 30, Blizzard announced that the second and final card reveal livestream, featuring Game Director Ben Brode and Sean "Day[9]" Plott, would take place on December 4.

Launch
On November 28, the release date of the expansion was officially announced as December 7 and 8, 2017. Logging into Hearthstone after the release of Kobolds & Catacombs rewarded three card packs from the expansion as well as a random legendary weapon card for free. In addition, the expansion launch also saw the addition of three sequential one-time Dungeon Run quests that rewarded one Kobolds & Catacombs card pack each, for a total of three more card packs.

Trivia

 * The song featured in the expansion's trailer was written by and  and sung by Matthew Mercer.

Gallery

 * Key art


 * Trailer


 * Concept art and sketches