Sydri’s Bursting Bodies

Choose a creature’s corpse or an undead creature within range. The target explodes in a shower of wretched necromantic energy. Each creature in a 15-foot radius sphere centered on the target must make a Dexterity saving throw. Any creature that fails takes 4d6 necrotic damage on a failed save or half as much on a successful one.

If you target an undead creature as the source of this spell, then that creature must also make the Dexterity saving throw.

if you reduce a creature to 0 hit points with this spell, the creature explodes, repeating the same effect as this spell.

At Higher Levels. When you cast this spell suing a spell slot of 3rd level or higher, the damage increases by 1d6 for each slot level above 2nd.