Needs review
Source: Book of Exalted Deeds

Description: You are adept at striking to deal nonlethal damage even with normal weapons.

Prerequisites:

Required for: Holy Subdual

You can use any melee weapon to deal nonlethal damage with no penalty on your attack roll. If you are a rogue, you can deal nonlethal damage with your sneak attack even if you are using a normal melee weapon. This feat does not allow you to deal nonlethal damage with ranged weapons.