Brimstone Hellblast

Your eyes glow a deep red as you unleash a fury of hellfire at a point in range. Each creature in a 20-foot-radius sphere centered on that point must make a Dexterity saving throw. A target takes 6d8 hellfire damage on a failed save, or half as much damage on a successful one.

The hellfire spreads around corners. It ignites flammable objects in the area that aren't being worn or carried.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d8 for each slot level above 3rd.