A vicious strike from your weapon reminds the enemy why attacking you is such a bad idea.

Encounter   ✦     Martial, Weapon
Immediate Reaction      Melee weapon

Trigger: An enemy hits or misses you with a melee attack

Requirement: You must be wielding a two-handed weapon.

Target: The triggering enemy

Attack: Strength -2 vs. AC

Hit: 3[W] + Strength modifier + Constitution modifier damage.

Published in Dragon Magazine 379, page(s) 66.