Void bomb

A dark streak flashes from your pointing finger/cannon to a point you choose within range and then explodes with a low rumbling sound. Each creature in an 8-foot-radius sphere centered on that point must make a Dexterity saving throw. A target takes 8d6 force damage on a failed save, or half as much damage on a successful one.

The void acid spreads around corners. It melts 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.