Torden's Pyrotechnic retreat

You fire a burst of superheated air and smoke from your hands, simultaneously scorching your foes and propelling yourself out of their reach.
Each creature in a 10 foot cone must succeed on a Dexterity saving throw or take 1d4 fire damage. You are pushed 5 feet in the opposite direction of the cone (this motion does not trigger opportunity attacks).
This spell's damage increases by 1d4 when you reach 5th, 11th, and 17th level.