Lady Deathwhisper

Health:
10 Man: 3.3M Hp (3.3M Mana)
25 Man: 13.4M Hp (14M Mana)
Berserk: 10 min
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Abilities:
-Mana Barrier - Envelops the caster in a powerful barrier that continually replenishes any lost health, at the expense of the caster's mana. Instant. [When pulled, she'll put up a Mana Barrier. Which means all damage done to her will instead drain her mana.]
-Dominate Mind - Mind controls the target. Damage increased by 200%. Healing increased by 500%. Lasts 20 sec. Unlimited range. Instant. [If this happens, Druids should try Cyclone target for time of Mind Control, anyway, just to help him/her survive so he doesn't die from our own dmg.]
-Death and Decay - 3000 Shadow damage inflicted every 1.0 sec to all targets in the affected area for 10 sec. 100 yd range. Instant. [She will be randomly dropping green puddles of do not stand in void zones shit. Obviously, do not stand in them, they can really hurt.]
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Phase 1 Only:
-Shadow Bolt - Inflicts 9188 to 11812 Shadow damage to an enemy. 100 yd range. 2 sec cast
-Dark Empowerment - Empowers the recipient, causing them to gain additional abilities.

Phase 2 Only:
-Frost Bolt - Inflicts 44850 to 47150 Frost damage to an enemy and reduces its movement speed by 50% for 4 sec. 40 yd range. 2 sec cast
-Vengeful Spirit - Deathwhisper summons a Vengeful Spirit. Vengeful Spirit persues a player for a short period of time. If caught, they will explode for 17370 to 18630 Shadowfrost damage to the target.
-Touch of Insigificance - Reduces the target's threat generation by 20%. Instant. Stacks to five. Lasts 30 seconds.
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https://www.youtube.com/watch?v=JXTE2VJSJS0
http://www.downfallguild.org/Lady-Deathwhisper
If you have any question, feel free to ask them below.