Corpse Bomb

You summon arcane energy from your body while chanting transferring your power into a corpse of your choosing. The energy bends and breaks bones forcing the corpse into a tight ball enveloped in magical energy.  As the corpse levitates in front of you, you choose a target within range and then launch towards the target in an explosion of arcane power, sharpened by bone and viscera. Each creature in a 20-foot-radius sphere centered on that point must make a Dexterity saving throw. A target takes 3d6 necrotic damage on a failed save, or half as much damage on a successful one.

Creatures in the area affected who fail a dexterity saving throw by the blast are blinded from gore for one round. 

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.