Spiteful Spirit

Acquisition
Signet of Capture
 * Prophecies
 * Sapph Blacktracker (Snake Dance)
 * Nighh SpineChill (Talus Chute)
 * Ceru Gloomrunner (Iron Mines of Moladune)
 * Zaln the Jaded (D'Alessio Seaboard (explorable area))
 * Eye of the North
 * Harvest Soulreign (Against the Charr)

Related skills

 * (elite)
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Trivia

 * The three original Prophecies bosses that this skill can be captured from are Nightmares and one also seems to appear in the skill icon.