Deep’s Burning

Up to 5 targets within range must make a Dexterity saving throw as the air around them ignites. The target takes 6d8 fire damage and catch fire on a failed save, or half as much and do not catch fire on a success.

Alternatively you may focus the spell on a single target, dealing 10d8 and they catch fire, taking half and not catching fire on a success. Targets on fire take 1d10 fire damage at the beginning of each of their turns they are on fire.

At Higher Levels: When you cast this spell using a spell slot of 5th level or higher, the damage increases by 1d8 for each slot level above 3rd.