Decompose

You gesture towards an object or creature within 30 feet that is organic in nature (not made of stone, metal, or similar inorganic materials). The target must make a Constitution Saving Throw if it is able, taking 4d6 Necrotic Damage on a failure or half as much on a success. If the target is an object or fails its save, it is poisoned and takes an additional 1d6+4 Acid Damage at the beginning of each of its turns for the next minute, able to make a new Constitution Save at the end of each of its turns, ending the effect and removing the poisoned condition on a successful save.

Any creature or object reduced to 0 hit points by this effect must succeed a Constitution Saving Throw when they reach 0 hit points. If they succeed this saving throw, they are treated as failing one death save, instantly, and the effect ends. If the target is an object or fails its saving throw, it is instantly dissolved into organic waste which can serve as prime fertilizer for any plant or fungus it has planted in it. Creatures dissolved this way cannot be revived or resurrected in any way short of a Wish spell, as their body is completely destroyed, though spells which transfer their soul function as normal as this has no effect on the spiritual being. Plants and fungi growing in the waste fertilizer made by this spell grow at triple their natural rate for the next year, and yield double the amount of fruits, crops, or other harvestable products. The waste fertilizer loses its increased potency after one year.

At Higher Levels. When cast using a spell slot of level 4 or higher, increase the Necrotic Damage dealt by 1d6 and the acid damage dealt by 1 for each level above 3rd used to cast this spell.