Rending Claws
Druid Attack 13
A slash with your claws reveals your weaknesses.
Melee touch
Target: One creature
Attack: Wisdom vs. Reflex
Hit: 2d8 + Wisdom modifier damage, and the target gains vulnerable 5 to all damage until the end of your next turn.
Primal Predator: The vulnerability equals 3 + your Dexterity modifier.
Rending Claws is a 13th level Druid encounter power. On a hit the target gains vulnerability to damage. [PrP:45]