Blazing heat of the Phoenix

With the blood of the Phoenix flowing through your veins, being infused with the flame of the Phoenix you've unlocked the potential to conjuring the visage of the Phoenix. With a burst of flame coming out of your body the visage of the Phoenix appears swirling from the flames behind your back dealing 7d10 fire damage in a 80 ft radius, with each flap of its wings a scorching hot heat wave comes out burning anything flammable lighting them ablaze and burning the flesh of your enemies. When the burst of heat unleashes from your body and the Phoenix forms you can pick who the heat hurts and doesn't hurt, with each additional flap of the wings those you picked with the first burst of heat are exempt from the 3d10 continual heat damage that occurs at the start of your turn while concentrating on the spell.