You bait your foe into attacking you, and then turn his blow straight back at him.

Encounter   ✦     Martial, Weapon
Standard Action      Melee weapon

Requirement: You must be wielding a light blade.

Target: One creature

Attack: Dexterity vs. Will

Hit: The target hits itself with its melee basic attack. (If you have combat advantage against the target and your Sneak Attack isn't expended, you can use Sneak Attack against the target.)

Update (10/3/2011)
Updated in Class Compendium.

Published in Player's Handbook, page(s) 122, Class Compendium.