Elemental Substitution

When you gain this feat, choose one of the following damage types: acid, cold, fire, lightning, or thunder.

• Once per round, when you cast a spell that deals damage of a type other than the type you chose with this feat, it can be altered to deal the damage type you chose instead. For example, a fireball could be altered to deal thunder damage instead of fire damage. Any other spells cast before your next turn must deal their normal damage type, if any.
• Any spell effects and parameters besides damage type remain unchanged.
• You can select this feat multiple times. Each time you do so, you must choose a different damage type.