You assault your enemy's mind with confusing thoughts, and it harms its own psyche as it tries to break free from your control.

Daily   ✦     Implement, Psionic, Psychic
Standard Action      Ranged 10

Target: One creature

Attack: Primary ability vs. Will

Hit: 1d8 + ability modifier psychic damage.

Effect: The target takes ongoing 5 psychic damage (save ends). Each time the target fails a saving throw against the ongoing damage, it takes damage equal to the result of the saving throw. If you score a critical hit with any attack while the target is still affected by this power, the target is dazed until the end of your next turn.

Level 19:

  Hit: 3d8 + ability modifier psychic damage.

  Effect: As above, but ongoing 10 psychic damage (save ends).

Level 29:

  Hit: 4d8 + ability modifier psychic damage.

  Effect: As above, but ongoing 15 psychic damage (save ends).

Published in Dark Sun Campaign Setting, page(s) 75.