Abyssal Tear

Point and channel your arcane knowledge to rip a gaping tear in reality, pulling open a gate to the burning lands of the Nine Hells. Each creature in a 20-foot-radius sphere centered on that point must make a Dexterity saving throw. A target takes 8d6 fire damage on a failed save, or half as much damage on a successful one.

Upon casting roll a d20. If you roll a natural 1 a demon of CR 1-4 spawns in a free space in the 20-foot-radius (DM's choice of demon).

The fire 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 1d6 for each slot level above 3rd.