Source Character Operations Manual pg. 94
Level Required 5
When you cast a spell that deals damage with a casting time of 1 standard action, you can cast the spell as a full action to change the type of damage it deals to any one of the following: acid, bludgeoning, cold, electricity, fire, piercing, slashing, or sonic. If the spell requires an attack roll to hit, changing its damage type does not change whether it targets EAC or KAC. You can spend 1 Resolve Point when casting a spell that deals damage to apply the effects of this magic hack without adjusting the spell’s casting time.
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