In response to an enemy's attack, you transform into a beast and pounce.

Encounter   ✦     Primal
Immediate Reaction      Personal

Trigger: An enemy hits you while you aren't in beast form

Effect: You use wild shape to change into beast form and then shift 1 square. You gain combat advantage against the triggering enemy until the end of your next turn.

Published in Primal Power, page(s) 40.