Black Death

A ball of black negative energy surges out in a 20 -foot-radius sphere from a point within range of 60 ft. of sight. Each creature in that area must make a Constitution DC saving throw of 15. A target takes 6d10 necrotic damage on a failed save, or half as much damage on a successful one.

At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, the damage increases by 2d10 for each slot level above 6th.