Phantom Echoes

Heroic Tier
Prerequisite: Cha 13, wizard
Benefit: When you use an arcane illusion power and hit a target, you gain combat advantage against that target until the end of your next turn. If the illusion power has an effect that a save can end, you instead gain combat advantage against the target until it saves against that effect.

Published in Arcane Power, page(s) 128.