Decompose++ (Critical role)

You reach out and touch the corps of a creature. Over the next minute, the corps begins to rapidly decompose, sprouting fungus and moss as it begins to degrade into compost and mulch. An odd-colored flower or two may also spring from the corps in this time. Applicable requirements for resurrection are unaffected by this decomposition until 5th level.

Little flavor by me: (The_Fishing_Pike)

At 5th level,the caster can choose whether or not the bones are affected by this decomposition, if they decide the bones are not affected, then by the end of the casting they are pushed to the surface of the compost pile and covered in a thin layer of moss.

At 5th level, a humanoid who has been subject to this spell for its full duration can not be resurrected with the revivify or raise dead spell.

At 11th level, if the spell revivify or raise dead is cast on the corps after 12 seconds (but before the minute is up), the affected creature starts its tern with the flesh rot disease and must make a constitution saving throw every 1d20 +5 hours,(separate rolls each time) on 3 success the affect ends. The greater Restoration spell ends this effect.

Any spell that stops decomposition like gentle repose, will temperately halt this spell.