Curse of Fatigue

The target must make a constitution saving throw.  If they fail, they gain two levels of exhaustion and cannot gain the benefits of a short rest.  These levels are restored when the spell ends.

This spell can only be dispelled by a  remove curse cast on the target.

If you cast this spell using a spell slot of 4th level or higher, the duration is concentration, up to 1 hour. If you use a spell slot of 5th level or higher, the duration is 8 hours and doesn’t require concentration.  If you use a spell slot of 7th level or higher, the duration is 24 hours. If you use a 9th level spell slot, the spell lasts until it is dispelled.