Fire Spirit

After narrowly surviving an encounter with a particularly powerful fire spirit, often by being engulfed, but not fully killed, some adventurers absorb a measure of the elemental's power. 

you can cast fire bolt at will, burning hands a number of times equal to your proficiency bonus, and Fire Shield 3/day. your spellcasting modifier is Charisma (spell save 8 +PB +CHA Modifier). additionally, you can use a bonus action to give yourself a flying speed of 65ft. (hover) for 1d10 rounds. you concentrate on this like you would a spell. you gain one level of exhaustion per 5 uses before a rest.