Ranger Attack 7Deceptive Steel
An off-hand attack your foe never saw coming causes disorientation as well as pain.
Encounter Martial, Weapon
Immediate Reaction Melee weapon
Requirement: You must be wielding two melee weapons.
Trigger: You make an opportunity attack against an enemy.
Target: The triggering enemy
Attack: Strength vs. AC (off-hand weapon)
Hit: 2[W] (off-hand) + Strength modifier damage. Until the end of your next turn, you also gain combat advantage and concealment against the target.
Published in Dragon Magazine 384, page(s) 36.