Lady Deathwhisper

Lady Deathwhisper is a boss found in the Knights of the Frozen Throne mission. She is the third and final boss of the mission's Lower Citadel wing.

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

Strategy
At the start of the fight, you will have Valithria Dreamwalker on your side of the board, but damaged to just 1 health. Her high attack enables a quick win if you can find a way to enable her to attack - which means either healing her to full health, or using a silence effect, or lowering her maximum health to match the current health (e.g. through Equality). Each of these strategies has some specific drawbacks and benefits.

The downside of healing is that you have to heal her back every turn, because Lady Deathwhisper's hero power will automatically damage her back to 1 health at the start of her turn. The benefit is that her hero power makes Deathwhisper's minions unable to attack Valithria, so she is very likely to survive. Additionally, you can safely use Valithria to clear out a low-attack Taunt without losing her.

The benefit of using a silence is that you can now attack with Valithria on every turn, without requiring additional effort. However, this also means that Lady Deathwhisper's minions can attack her at will, so you will need to put in more effort to keep Valithria alive. If you can clear the board you should be safe, because Deathwhisper's deck contains no minions that have Charge. (However, if you are really unlucky you could lose the game due to Forbidden Shaping generating such a minion with).

Setting Valithria's maximum health to 1 is in many ways similar to silencing her, however you have one additional drawback - the lowered maximum health itself. With a silenced Valithria, you still have the option of healing her and then using her to remove a low-attack minion from the board; once her maximum health is at 1 you lose that option, making her even more vulnerable to Deathwhisper's minions.

Divine Shield is very effective for keeping your minions on the board as well as keeping Valithria protected if you are using the "set Health to 1" strategy.

Lady Deathwhisper seems to prioritize removing the threat of Valithria over attacking your hero; that makes survival in this fight a bit easier than in some other boss fights.

A Priest deck built around Baku the Mooneater can be very potent, as Priest's upgraded hero power can fully heal Valithria every turn from turn 2 onwards. This can result in a kill as early as turn 5 if Deathwhisper does not play any Taunts.

Combining Platebreaker and Circle of Healing on turn five can provide you with an easy OTK, providing that Deathwhisper doesn't have any taunt creatures on the board.

Argent Braggart can be used to instantly gain a 30 attack minion that can attack at any time, although it will most likely need additional protection.

Boss completion
As the third and final boss of Lower Icecrown Citadel, defeating Lady Deathwhisper unlocks the Upper Reaches and awards the player with a Knights of the Frozen Throne card pack.

Dialogue
Before match
 * The Lich King
 * ''This is Lady Deathwhisper. Before she got nerfed!

Introduction
 * Lady Deathwhisper
 * ''What is this disturbance? My work here is not complete.

Turn 1
 * Valithria Dreamwalker
 * ''Help me, champion! I must not... give in.
 * The Lich King
 * ''Deathwhisper! I told you to finish off that dragon. For the leader of a death cult you’re taking your sweet time.

Emote Response
 * Lady Deathwhisper
 * ''Was that a threat?

Hero Power
 * Lady Deathwhisper
 * ''Darkness embraces you...
 * ''Death calls to you...
 * ''Do you grasp the futility of your actions?
 * ''The living are so very weak...
 * ''Your flesh is a curse...

Player's cards
 * Lady Deathwhisper
 * Equality
 * ''That is not the good idea you think it is.
 * Becoming a death knight
 * ''Ah! You, too, have tasted the master's power...
 * The Lich King
 * ''Master I – please – I'm killing them as fast as I can!

Interaction with Valithria
 * Lady Deathwhisper
 * Hands off the dragon already! (giving Divine Shield)
 * As if I didn't hate that dragon enough. (giving Taunt)
 * Sickening. (giving Windfury)
 * Lay your hands elsewhere, Paladin! (casting Blessed Champion)
 * I don't like this game anymore. (summoning another Valithria)

Fully healing Valithria
 * Valithria Dreamwalker
 * ''I am... renewed!

Attacking Lady Deathwhisper with Valithria Dreamwalker
 * Lady Deathwhisper
 * ''Argh..
 * The Lich King
 * ''That dragon will undo all we’ve wrought! Destroy it, Deathwhisper!

Deathwhisper loses all Armor
 * The Lich King
 * ''Stop toying with them and finish this, Deathwhisper. Why isn’t Arcane Explosion in your deck!?

Death
 * Lady Deathwhisper
 * ''Impossible....!
 * The Lich King
 * ''Your deck has failed me, Deathwhisper. Be content that your defeat was quick.

Defeat
 * The Lich King
 * ''Once more. With healing!

Completing The Lower Citadel
 * The Lich King
 * ''You seek to turn my power against me? Hold fast while I net-deck something that will forever shroud this world in darkness.

Lore
The lich is the Supreme Overseer of the Cult of the Damned and the second boss of the Icecrown Citadel raid. The fight is mostly a DPS race (with a high damage output it becomes significantly easier), but also requires high awareness from all raid members. The 25-player Heroic version of this boss is one of the most difficult encounters in the instance.

is a Green Dragon captured by the Scourge to use as a test subject and imprisoned within Frostwing Halls, serving as the first boss of that wing. The goal of the fight is to heal Valithria up to 100%, while adds spawn in decreasing intervals in a chaotic battle for survival. The loss of a tank or a healer could easily result in a wipe.

The connection between Lady Deathwhisper and Valithria is unique to Hearthstone; the two are independent boss battles in World of Warcraft.

Patch changes

 * Added.