Black Powder

You create a mote of concentrated and incredibly hot smoke that quickly detonates. You force a creature to make a Constitution saving throw. On a failure, they take 1d6 fire damage and are pushed 5 ft. away from you.

At higher levels. When you reach certain character levels, the fire damage you deal increases. 2d6 at 5th level, 3d6 at 11th and 4d6 at 17th.