You can modify a spell that uses energy to deal damage to instead deal subdual damage.
Prerequisite: Heal 1 rank.
Benefit: Choose one type of energy: acid, cold, electricity, fire, or sonic. You can modify a spell with the chosen designator to inflict nonlethal damage. The nonlethal spell works normally in all respects except the damage dealt is nonlethal. For example, a nonlethal fireball spell works in the usual way, including dealing fire damage, but the damage dealt functions as nonlethal damage.
A nonlethal spell uses up a spell slot zero levels higher than the spell’s actual level (that is, exactly the same level as the original spell).
Special: You can gain this feat multiple times. Each time it applies to a different type of energy.