Righteous Strike
( Epic Level Handbook, p. 66)[Epic]
Your unarmed strikes are particularly damaging to chaotic creatures.
Prerequisite
Improved Unarmed Strike (PH) , Stunning Fist (PH) , WIS 19, any lawful alignment,
Benefit
Your unarmed strike is treated as a lawful weapon (it deals +2d6 points of damage against creatures of chaotic alignment). This ability doesn't stack with similar abilities (for instance, if some other effect has granted the lawful ability to your unarmed strike).