Tudor's Sapping Touch

The caster places one hand on the material component, and the other on the target, sapping the vitality of the target while not causing direct damage. The target must make a Constitution Saving Throw or be dealt 1d4 levels of exhaustion. If the target is unconscious at the time of casting, they make the save at disadvantage. The caster can choose to keep this spell from killing the target, keeping their exhaustion level at 5. While under the effects of this spell, the target is unconscious if their exhaustion level is at 3 or more, and they cannot remove exhaustion by resting. This spell can be removed by Greater Restoration, Heal, or a Wish spell, which will remove 1d4-1 levels of exhaustion, or by casting Dispel Magic at 7th level or higher, with no effect on exhaustion.