You can change the type of energy damage a spell causes.
Prerequisites
Any other metamagic feat, Arcane Lore 3 ranks.
Benefit
You choose one type of energy when you gain this feat: acid, cold, electricity, or fire. When employing a spell with the acid, cold, electricity, fire, or sonic descriptor, you can modify the spell to use your chosen type of energy instead. The altered spell works normally in all respects except the type of damage dealt.
Level Increase: +0 (The altered spell uses a spell slot of the spell’s normal level.)