channel riff

the caster uses their action to start playing a song on their next turn they keep playing the song but on their third turn they fire a white bolt of musical power at a creature within 800 ft of them. THE ATTACK...the caster rolls a ranged attack roll and then a performance check starting at 12 (add 2 to it per higher spell slot max of 16) if they succeed the check they roll a d100  plus charisma mod for damage if they fail they roll a d20+ 1 d8 plus charisma mod for damage. the target rolls a dex save to dodge out of the way.