Divine Vengeance( Deities and Demigods, p. 50)
The deity can channel energy to do additional energy damage in combat against undead.
Extra Turning (PH) , Ability to turn undead,
The deity can spend one of its turn undead attempts to add 2d6 points of sacred energy damage to all its successful melee attacks against undead until the end of its next action. This is a supernatural ability.