You can find a guide to the normal version of this encounter here!
Originally Posted by AlienaHello and welcome to the TankSpot Icecrown Citadel Raid Guide! My name is Aliena and in this video I'll cover everything you need to know about the heroic mode 10-man version of the Lady Deathwhisper encounter. I will assume that you're familiar with the normal version of this encounter. If you're not, I suggest first watching our guide to the 10-man normal mode to learn about Deathwhisper's base abilities.
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In her heroic version, Deathwhisper has double the health and mana that she has in her normal incarnation, so both phases are going to take you a lot longer to down than you're used to. All adds also have more health and their abilities deal significantly more damage than you're used to from the normal version, so handle them with caution and try to never be near an add casting Dark Martyrdom.
If you're used to the 25-man version, you won't be too surprised by Deathwhisper's occasional mind control. She uses this throughout both phases on one player at a time. Dominate Mind lasts 12 seconds and will increase the affected player's damage by 200% and healing by 500%, so you'll want to use crowd control on them - especially if it's targeted at a high DPS class.
As soon as you burn her mana barrier down and phase 2 starts, you'll notice that Deathwhisper will continuously summon adds throughout phase 2 approximately every 45 seconds. They'll only spawn at the entrance to the room though, so you should pull her towards the entrance stairs when the phase starts.
Also note that Deathwhisper is not tauntable in phase 2, so in combination with Touch of Insignificance this means both your tanks will need to be highest on threat at all times. Whoever is not currently affected by 5 stacks of the Touch will need to pick up any new adds that spawn. They can be single targeted or AoEd down, whichever you prefer.
Lastly, the Vengeful Shades that spawn in phase 2 do significantly more AoE damage when they reach their chosen target and hit it, so every single raid member needs to stay spread out and keep an eye out for the shades. Getting hit by one results in a 20k damage AoE explosion, and coupled with Frostbolt Volley it can easily mean one or even several deaths. Only one will spawn at a time and they despawn within just a couple seconds, so just kite them if you notice one following you.
No other changes have been made to this encounter, so if your tanks are good at picking up multiple adds and your raid's awareness is good, this encounter should be one of the easier heroic modes. Good luck!
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