Your enemy strikes, and as you defend yourself with one blade, you drive the other deep into his gullet.

Encounter   ✦     Martial, Weapon
Immediate Interrupt      Melee weapon

Trigger: A creature makes a melee attack against you

Target: The attacking creature

Attack: Strength vs. AC

Hit: 2[W] + Strength modifier damage.

Effect: Until the end of your next turn, the target's attack rolls against you take a penalty equal to your Wisdom modifier.

Revision (7/16/2008)
On the Hit line, replace “[W]” with “2[W].”

Published in Player's Handbook, page(s) 112.