Sebastian Crowe's Guide to Drakkenheim, slightly adjusted
4-level Necromancy
You cause the triggering creature's body to explode in a violent shower of gore and infected flesh. Creatures within 10 feet of a point centered on the triggering creature's body take 4d8 necrotic damage and 4d8 acid damage, or half as much damage on a successful Dexterity saving throw.
AN: Lowered range from 120 feet. Also perhaps it should do much less damage...and not be a reaction, but a full on action spell (especially for DK who could trigger the explosion on willing undead minions)
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