Rotting Root Lord's Rot (5e Spell)
From D&D Wiki
|Casting time:||1 action|
|Range:||Self (20 ft. radius)|
You commune with a powerful, but uncontrollable, earth elemental. All creatures within a 20-foot radius of you must make a Dexterity saving throw. On a failed save, the target takes 8d6 necrotic damage. If this damage reduces the target to 0 hit points, it rots to nothing.
A rotted creature and everything it is wearing and carrying, except magic and metal items, are reduced to a pile of fine gray dust. The creature can be restored to life only by means of a true resurrection or a wish spell.
At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d6, and its range increases by 5 ft. for each slot level above 6th.