Divine Might( Faiths & Pantheons, p. 214)
You can channel energy to increase your damage in combat.
Power Attack (PH) , CHA 13, STR 13, Ability to turn or rebuke undead,
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.