Bront.org

Devoted Mage
Prerequisites: Smite Evil ability, Ability to spontaneously cast arcane spells.

Benefit:
-As a Swift Action that doesn't provoke an attack of opportunity, you may sacrifice one of your daily spells to add a bonus to your attack and damage rolls for one round.
-Your Paladin and Sorcerer levels stack for determining the extra damage dealt by your smite evil ability.
-You may freely multiclass between Paladin and Sorcerer, though you still must maintain your lawful good alignment and deal with all other normal multiclassing rules.