Touch of Combustion

A bead appears in your hand that explodes with fire when you touch a creature. Make a melee spell attack against the target. On a hit, the target takes 3d6 fire damage, and it catches fire. At the start of each of its turns, a creature burning in this way takes 1d6 fire damage. A creature that can reach the burning target can use an action to extinguish the fire.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d6 for each slot level above 1st. When casting the spell at 3rd level or higher, increase the fire damage taken at the start of round by 1d6 for every two levels above 3rd.