You run to your ally's aid and strike out at an advancing enemy.

Encounter   ✦     Martial, Weapon
Immediate Interrupt      Melee weapon

Trigger: An enemy within 3 squares of you hits your ally

Effect: Before you attack, you shift 2 squares.

Target: The triggering enemy

Attack: Strength vs. AC

Hit: 3[W] + Strength modifier damage.

Published in Martial Power 2, page(s) 93.