Decompose Flesh

You attempt to rapidly age and decompose the flesh of one creature that you can see within range. The creature must make a Constitution saving throw and on a failed save, they begin to decompose at a massively accelerated rate. At the start of each of their turns for the duration of this spell, the target  takes 3d10 necrotic damage and suffers one level of exhaustion. Constructions, incorporeal undead, and creatures that lack flesh and bone are immune to this spell.