Divine Might

(Faiths & Pantheons, page 214, DnD 3.0)

[Divine]

You can channel energy to increase your damage in combat.

Prerequisite

Power Attack, CHA 13, STR 13, Ability to turn or rebuke undead

Benefit

Spend one of your turn/rebuke undead attempts to add your Charisma modifier to your weapon damage for a number of rounds equal to your Charisma modifier. This is a supernatural ability.