Great Smiting
From Compendium of Worldly Lore
Needs review
Source: Dungeon Master's Guide
Description: Your smiting is incredibly potent
Prerequisites: Epic Level, Smite, CHA 25
Whenever the character makes a successful smite attack, add twice the appropriate level to damage (rather than just the character’s level).
Special
A character may select this feat multiple times. Its effects stack. Remember that two doublings equal a tripling, and so forth.