Your attack connects to expose an opening that any ally with will or daring can seize.

Encounter   ✦     Martial, Weapon
Standard Action      Melee or Ranged weapon

Target: One creature

Attack: Strength vs. AC

Hit: 2[W] + Strength modifier damage, and the target grants combat advantage to your allies until the end of your next turn.

Effect: Any ally that hits the target with an attack gained from an action point before the end of your next turn deals 5 extra damage to the target.

Published in Dragon Magazine 384, page(s) 51.