Mind Numbing Touch (3.5e Feat)
From D&D Wiki
Mind Numbing Touch [Ki Manipulation]
You can weaken an opponent mentally with your unarmed strikes.
Benefit: You may spend 2 Ki Points and deliver a touch attack that forces your target to make a will save (DC: 10+ 1/2 Character Level + Wis or Cha Modifier (Whichever is higher). On a failed save your opponent take 2 temporary wisdom damage.