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Defeat the bosses of The Frostwing Halls in Icecrown Citadel in 25-player mode.

Enter every portal spawned by Valithria Dreamwalker before healing her to full health in 25-player mode.

Defeat the bosses of The Crimson Hall in Icecrown Citadel in 25-player Heroic mode.

Defeat the bosses of The Crimson Hall in Icecrown Citadel in 25-player mode.

Defeat the bosses of The Plagueworks in Icecrown Citadel in 25-player Heroic mode.

Defeat Professor Putricide without using Regurgitated Ooze on the Abomination in 25-player mode.

Defeat Rotface without a Big Ooze casting Unstable Ooze Explosion in 25-player mode.

Defeat Festergut while none of the players in your raid group ever had 3 stacks of Inoculated in 25-player mode.

Defeat the first four bosses in Icecrown Citadel in 25-player Heroic mode.

Defeat Lord Marrowgar without any raid member remaining impaled for more than 8 seconds in 25-player mode.

Defeat an Unyielding Behemoth while you have the Tidal Surge effect during the Ozumat encounter in Throne of the Tides on Heroic Difficulty.

Get Lady Naz'jar to kill one of her minions with her Geyser ability in Throne of the Tides on Heroic Difficulty.

Engage Vanessa VanCleef within 5 minutes of being inflicted with the Nightmare Elixir in Deadmines on Heroic Difficulty.

Defeat Deathwing on Normal or Heroic Difficulty in the Dragon Soul raid.

Open a Lovely Dress Box and receive a Lovely Black Dress.