Unholy Strike

Type of Feat: Epic
Prerequisite: Smite Good, Evil Alignment*, Epic.
Specifics: Any weapon used is treated as an unholy weapon (+2d6 unholy damage). Does not stack with similar abilities.
Use: Automatic.

(*Note: You can select this feat even when good or neutral, but it will not give you any benefits, so be smart and don't choose it if you can't use it.)