The energy from your attack causes swirling force to gather about you, which you can unleash on an attacker.

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

Target: One creature

Attack: Constitution vs. AC

Hit: 1[W] + Constitution modifier damage, and one enemy marked by you other than the target takes force damage equal to your Charisma modifier.

Augment 1

Effect: Until the end of your next turn, when an enemy adjacent to you hits and damages you, that enemy takes force damage equal to your Charisma modifier, and you can push it 1 square.

Augment 4

Hit: 2[W] + Constitution modifier damage, and one enemy marked by you other than the target takes force damage equal to your Charisma modifier.

Effect: Until the end of your next turn, when an enemy adjacent to you hits and damages you, that enemy takes force damage equal to 5 + your Charisma modifier, and you mark it until the end of the enemy's next turn.

Published in Dark Sun Campaign Setting, page(s) 84.