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39678 • KARA_08_01
KARA 08 01.png
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Set:One Night in KarazhanOne Night in Karazhan
Health:30 Health
Artist:John Polidora
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Netherspite is a boss found in the One Night in Karazhan adventure. It is the second boss of the fourth and final wing.

Hero Power[]

Normal Heroic
Nether Rage
Nether Rage

Special cards[]

Blue Portal
Red Portal

Note for beams: if a dormant minion is placed in the immediate path of a portal beam, it will visually interrupt the beam and instead of carrying on to the next non-dormant minion, actually will buff Netherspite as if there were no minions in the path. This big goes away once the dormant minion awakens.

Normal / Heroic[]

Nether Breath
Terrifying Roar


Looming Presence


The below classes are listed purely for reference, and have no effect on the boss' use of the cards during the battle.

Normal Heroic
Class Card Quantity Class Card Quantity
Boss Terrifying Roar 2 Boss Looming Presence 2
Nether Breath 2 Terrifying Roar 2
Druid LegacyMoonfire 2 Nether Breath 2
LegacyClaw 2 Druid LegacyClaw 2
LegacySavagery 2 The Grand TournamentMulch 2
LegacyWrath 2 LegacyBite 2
LegacyHealing Touch 2 LegacySwipe 2
LegacyWild Growth 2 LegacyStarfall 2
LegacyBite 2 LegacyNourish 2
LegacyStarfall 2 LegacyStarfire 2
LegacyNourish 2 Mage LegacyArcane Missiles 2
LegacyStarfire 2 LegacyArcane Explosion 2
Mage LegacyArcane Missiles 2 LegacyArcane Intellect 2
LegacyArcane Explosion 2 LegacyPolymorph 2
LegacyArcane Intellect 2 Warlock LegacyTwisting Nether 2


The key to defeating Netherspite lies in his two portals: One Night in KarazhanRed Portal on the left, and One Night in KarazhanBlue Portal on the right. Without minions blocking the beams, Netherspite will deal at least 6 damage to the player each turn on Normal, or 16 damage each turn on Heroic.

The most critical beam to block is the right-hand one. By placing a Taunt minion in the blue beam, Netherspite will be forced to destroy it one point at a time, although he can use a variety of spells including Terrifying Roar (Heroic), LegacyPolymorph, The Grand TournamentMulch and Nether Breath (Heroic) to speed the process up. However, critically Netherspite will not attack any Taunt minion with any Attack value that he cannot destroy in a single hit. This means that even a 1/2 Taunt like LegacyGoldshire Footman can cause Netherspite to refrain from attacking. Despite this, his variety of tools for removal means Netherspite will not be hindered by any one Taunt for too long, and if the blue beam is ever unblocked will immediately resume attacking the hero; a good number of Taunts is therefore required. With Heroic Netherspite dealing 16+ damage each turn, it is vital to have a Taunt to play on turn 1, making it best to include several such minions in the deck.

While the Taunts are holding Netherspite back, the left-hand beam provides a means for the player to provide strong, if fitful, damage. High-Attack minions work well with the beam's Windfury effect, especially Charge minions like LegacyReckless Rocketeer. The frequency of Netherspite's removal (especially Nether Breath, combined with LegacyArcane Explosion, LegacySwipe or LegacyArcane Missiles) means the player will need to refresh both side of their board fairly regularly, and Nether Breath in particular means minion Health values are often unimportant. NaxxramasSludge Belcher is a good pick for preventing Netherspite from using board wipes to get unstoppable hits on your hero.

Freeze effects can be effective for buying a free turn, especially if lacking a Taunt; LegacyIce Lance and LegacyFrostbolt are ideal.



Netherspite Historian
Book Wyrm



Before match

Netherspite rules all of Karazhan's portals. We'll need his control device.


Who disturbs my research?

Turn 1

Those beams empower the dragon. Use minions to block them!

Turn 3

Stop touching the portals! The flux modulations are precisely tuned!
Just tell us which one has Medivh!

Turn 5

That party sounds fun. Go join it and leave my portals alone!
We need those portals! Guests are tossing tomes into the mana pool!

Emote Response

You challenge a dragon in his lab?

Hero Power

So many worlds! So much to learn!

First blocking a portal

My experiments! Leave them alone!

Terrifying Roar

Go away!

Player's cards

LegacyAngry Chicken
You again? Why are you always inside my portals?
Goblins vs GnomesUnstable Portal
Interesting... Fundamental instabilities...


Well done! Now, if I can just recall how this functions...

Raid Leader[]

The LegacyRaid Leader minion has special alternative quotes triggered exclusively during the Netherspite encounter.


Stand in the beam!


No, the OTHER beam!


Out of the beam! No! N-...


"The very top level of Karazhan is Medivh's private quarters. This is where Medivh opens portals to far off lands. And the creature that helps control those portals is the fearsome dragon Netherspite."[1]

Netherspite assists Medivh in the opening and controlling of various portals, to locations both across Azeroth and far beyond. One Night in KarazhanNetherspite Historian appears to be researching the great nether dragon.

"Oh, splendid! Netherspite is away preparing the arrival portals for tonight’s guests. Netherspite is Medivh’s laboratory assistant and portal master. He also happens to be a dragon, and very serious about his experiments. In addition to his considerable knowledge of all things arcane, Medivh is something of a master of portal arcanology. I’m assuming that arcanology is a word. Regardless, from this very chamber, you can access realms and regions beyond imagination! The possibilities are endless, but we really shouldn’t touch anything." - One Night in KarazhanMoroes[2]

In World of Warcraft[]

Netherspite's appearance in the Karazhan raid is a distinctive fight involving three coloured beams, which the players must block to prevent the dragon from gaining their benefits. This is recreated in Hearthstone, with minions used to block the dragon's two beams.

Wowpedia icon.pngThis section uses content from Wowpedia.
Netherspite is an immense nether dragon found lurking in the Celestial Watch, Medivh's personal observatory. As the only dragon found inside the dark tower, he will use his otherworldly powers to vanquish any creatures that attempt to go near him. This dragon's death is not required for further progress into the tower but he does control the trash between the One Night in KarazhanShade of Aran and the Chess Event.
There are two phases to this fight that Netherspite alternates between. The Portal phase, (the first one) lasts for one minute, and the Banish phase (the second one), lasts for half a minute. He alternates between these two at the given rate until dead or enraged.
Portal phase

Netherspite in World of Warcraft

Players get a system warning: "Netherspite cries out in withdrawal, opening gates to the nether."
At the beginning of this phase, three portals of different colors will spawn at fixed locations in the room and will begin emitting a beam of their respective color (see below) towards Netherspite. The beams do not slowly move toward him, but rather appear touching Netherspite once they are created.
If the beams are allowed to hit Netherspite freely, they grant him stacking buffs which strengthen or even heal him. The buffs on Netherspite last 5 seconds from last application (instead of the 8 to 20 seconds they do on players). The beams can (and must) be blocked by players who position themselves between a portal and Netherspite. Players blocking the beams are also affected by a stacking buff, having both a positive and a negative effect which grows more extreme with each second that the player spends blocking a beam. Although the positive effects are quite helpful for the fight, the negative effect makes it difficult (but certainly not impossible) for one player to block a beam for the complete duration of the Portal phase.
Once a buff "ticks out" (player leaves the beam long enough to lose the debuff — 8-20 sec), another debuff is applied to the player called Nether Exhaustion, which prevents him from intercepting that color beam for the next 1 minute and 30 seconds.
This part of the fight relies on individual player responsibility in that all players designated to block a beam ahead of time (see below for suggestions) must be aware of what beam they are supposed to be blocking and when so as to intercept it as quickly as possible.
Those not blocking a red beam deal damage or heal the raid. Because of the red beam's unique abilities, healers should not ever waste time healing the tank. Damage dealers need not worry about threat, since the tank has guaranteed aggro while standing in the red beam.
For each Portal phase, one or two players are needed to block each beam. Using one player is simpler, but requires much better gear. Using two players avoids stacking debuffs to dangerous levels, but requires intelligent coordination.


  • The portals shown in Netherspite's art lead to the Firelands, Silvermoon City, Moonglade, the Maelstrom and what appears to be Netherspace or the LegacyTwisting Nether. Likely intended to depict the adventure's five Portal spells, the warlock-themed portal may depict a removed spell, replaced by the warrior's One Night in KarazhanIronforge Portal, which does not feature in the art.
  • While special quotes by bosses in response to card played had become quite common by the time of One Night in Karazhan, the LegacyRaid Leader's custom quotes for this encounter are the first time a minion has had its quotes changed to match a boss encounter.


Netherspite WoW art.jpg

Netherspite controlling Medivh's portals.

A magical dragon with Netherspite's appearance about to explode into fireworks over Karazhan

Netherspite art2.jpg

Netherspite enjoying the party in the adventure's trailer

Patch changes[]