Dark Aura

Description
For 30 seconds, whenever target ally sacrifices Health, Dark Aura deals 5...41 shadow damage to adjacent foes, and you lose 5...17 Health.

Acquisition
Skill Quests: Skill Trainers: Signet of Capture:
 * Graven Images (North Kryta Province)
 * Sorim (Quarrel Falls)
 * Master Scout Kiera (Henge of Denravi)
 * Dakk (Ember Light Camp)
 * ... more to be added ...