Invisibility

Invisibility is a Tier 2 Mental power in the Illusion tree.

Official Description
Shroud your movements, enabling special ambush attacks:
 * Ambush Pain: Blast : Inflict sudden, psychic damage on your target, knocking it down. Breaks Stealth.
 * Ambush: Sleep : Force your target to sleep, damaging and stunning it. Breaks Stealth.