Ball of Death

A dark sphere flashes from your pointing finger to a point you choose within range and then blossoms with a low roar into a cloud of death. Each creature in a 25-foot-radius sphere centered on that point must make a Constitution saving throw. A target takes 5d8 necrotic damage on a failed save, or half as much damage on a successful one.

The cloud spreads around corners. It begins to rot organic objects in the area that aren't being worn or carried.

All creatures make a Constitution saving throw, any who fail become poisoned by necrotic energy and take 1d6 of damage at the beginning of their turn for 3 rounds. During this time any healing is halved.

At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, the damage increases by 1d8 for each slot level above 5th.