You can manipulate the elemental nature of your spells.

Benefit: Choose one energy type: acid, cold, electricity, or fire. You may replace a spell’s normal damage with that energy type or split the spell’s damage, so that half is of that energy type and half is of its normal type.

Level Increase: +1 (an elemental spell uses up a spell slot one level higher than the spell’s actual level.)

Special: You can gain this feat multiple times. Each time you must choose a different energy type.