Corpse Explosion

You call upon the death energy of a nearby corpse or willing undead to erupt. The corpse explodes, emanating a 10 foot area of destruction. Each creature in the area must succeed on a Constitution saving throw or take 3d8 necrotic damage and become poisoned. On a success, the create takes half damage and isn't poisoned. At the end of each of its turns, the target can make a Wisdom saving throw. On a success, the spell ends.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 2d8 for each slot level above 2nd.