You find the weak point in an enemy's defenses and exploit it.

Daily   ✦     Martial
Minor Action      Close burst 10

Target: One enemy in the burst

Effect: The target gains vulnerable 10 cold, vulnerable 10 fire, vulnerable 10 lightning, or vulnerable 10 thunder (your choice) until the end of your next turn.

Published in Dragon Magazine Annual, Dragon Magazine 366, page(s) 16.