Feat UtilityBrutal Instinct
With your defiant snarl, the advantage your foes had gained evaporates, giving you an opening.
Free Action Personal
Trigger: You are flanked, or your prey gains combat advantage against you
Effect: You do not grant combat advantage to those who triggered this power until the end of your next turn. If your prey is among those who triggered this power, you gain combat advantage against your prey until the end of your next turn.
Published in Dragon Magazine 373, page(s) 14.