Vocalist Arcanist (TP)

Your unique method of weaving song into magic allows you to enhance your spells through your magical vocals. When you cast a spell that forces a target to make a saving throw or requires you to make a spell attack roll, you can choose to enhance the spell through song. You can wait until after you roll the d20 before deciding to use this, but must decide before the GM says whether the roll succeeds or fails. When you do so, make a Charisma (Performance) check. The DC for this check is equal to 10 + the spell's level. On a success, your proficiency bonus is doubled for the spell attack roll or your save DC for that casting of the spell. Once you have succeeded on this check three times, you can't use this benefit again until the next dawn.