Your strike delivers a torrent of psionic energy that addles your foe.

At-Will   ✦     Augmentable, Psionic, Weapon
Standard Action      Melee weapon

Target: One creature

Attack: Constitution vs. AC

Hit: 1[W] + Constitution modifier damage, and the target cannot gain combat advantage until the end of your next turn.

Augment 1

Special: When making an opportunity attack, you can use this power in place of a melee basic attack.

Augment 2

Close: burst 1

Target: Each enemy in the burst

Hit: 2[W] + Constitution modifier damage, and the target cannot gain combat advantage until the end of your next turn.

Published in Player's Handbook 3, page(s) 48.