Deadly sacrifice
rogue utility 10
Melee touch
Trigger: an ally adjacent to you is hit by an enemy's melee attack
Target: the triggering ally
Effect: "You and the target swap places. The attack hits you instead of the target. The enemy grants combat advantage to you until the end of the encounter. In addition, your Sneak Attack deals extra damage against the enemy equal to your Intelligence modifier until the end of the encounter."[MP2:64]
Deadly sacrifice is a daily power available to rogues at 10th level.