Combust

Snap your fingers at a target within range, blasting them with a sudden eruption of flame. The target must succeed on a Dexterity saving throw or take 5d10 fire damage.

On a successful save, this spell creates a small magical fire in the creature's space that lingers for 1 minute. A creature that enters the flames for the first time on its turn or ends its turn there takes 2d6 fire damage.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher , the damage increases by 1d10 for each slot level above 3rd.