Orb of Annihilation

You summon a crackling sphere of black and purple energy, hurling it at the target. Make a ranged spell attack against the target. On a hit, the target takes 4d8 shadow damage. Hit or miss, the sphere then explodes. The target and each creature within 5 feet of the point where the orb exploded must succeed on a Dexterity saving throw or take 2d6 fire damage.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the fire damage increases by 1d6 for each slot level above 2nd.