Corpse Explosion

As you snap your finger, a dead creature within range explodes with necrotic energy. Each creature in a 15-foot-radius sphere centered on the dead creature must make a Dexterity saving throw. A target takes 2d8 necrotic damage on a failed save, or half as much damage on a successful one. If you reduce a creature to 0 hit points with this spell, the creature explodes, repeating the same effect as this spell.