Quell the Profane

(Book of Exalted Deeds, page 45, DnD 3.5)

[Exalted]

Your mightiest attacks weaken evil foes.

Prerequisite

Power Attack, Resounding Blow, STR 13, base attack bonus +8

Benefit

Whenever you deal a critical hit to an evil creature using a melee weapon with which you are proficient, your opponent must succeed on a Fortitude save (DC 10 + 1/2 your character level + your Cha modifier) or take 1d4+1 points of temporary Strength damage. A monk's unarmed strike is considered a melee weapon for purposes of this feat.