Lady Illucia Barov

Lower study rooms
Descend to The Ravenian, Lord Alexei Barov and Lady Illucia Barov. Prepare crowd control for Alexei's linked guards before approaching him, and clear Illucia's surrounding enemies before Fear can send someone into them. Finish the remaining chambers before returning to the central study.

Lady Illucia Barov
Elite UndeadIllucia tests whether the group can contain a dominated teammate and recover from Fear without letting nearby Silence stop the healer.
Abilities

Dominate Mind
Control the dominated teammate rather than killing them. Release that control when Illucia's domination ends so the player can rejoin the fight.

Fear
Strikes fear in an enemy, causing it to flee in terror for 4 seconds. Only 1 target can be feared at a time.
Clear the area around Illucia before pulling so a feared player cannot bring another room's enemies into the fight.

Silence
Silences nearby enemies, preventing them from casting spells for 10 seconds.
Keep the healer and ranged casters away from Illucia's nearby Silence instead of stacking on the tank.

Curse of Agony
Curses nearby enemies with agony, inflicting Shadow damage every 3 sec. for 30 seconds. Only one curse per warlock can be active on any one target.
Remove Curse of Agony when possible so its continuing Shadow damage does not persist through Fear or Silence.
Tank- Pull Illucia only after the surrounding enemies are cleared, and keep the fight away from the healer's ranged position. Recover the boss promptly after Fear rather than dragging Silence onto the casters.
Healer- Use a ranged position outside the nearby Silence. Keep Curse of Agony victims healthy before Fear removes their control, and ask a curse remover to clear it when your class cannot.
Damage- Control a dominated teammate without killing them and stop attacking that player when domination ends. Ranged casters should stay away from Silence and help clear Curse of Agony when able.