Corpse Burst

With a surge of necromantic energy, you can cause a corpse, or a creature with 0 hitpoints to explode. If the creature has 0 hitpoints, it must succeed a Constitution saving throw. On a failed saving throw, that creature instantly dies and explodes. Creatures in a 10ft. radius around that creature must succeed a Constitution saving throw or take 6d8 necrotic damage on a failed saving throw and half as much on a success. A creature or corpse that explodes is instantly killed and is reduced to ashes. On a successful saving throw, the target with 0 hitpoints loses one death saving throw (if applicable) and is otherwise unaffected. This spell can only target corpses and automatically fails and is wasted if you target a construct, undead, or a living creature.