The pain you inflict promises more agony to come.

At-Will   ✦     Divine, Shadow, Weapon
Standard Action      Melee weapon

Target: One creature

Attack: Strength vs. AC

Hit: 1[W] + Strength modifier damage. You gain combat advantage against the first enemy you attack before the end of your next turn.
    Level 21: 2[W] + Strength modifier damage.

Published in Heroes of Shadow, page(s) 47.