Svefnthorn

The rune causes the creature to make a DC 25 Con Saving throw. On a successful roll the creature gets 1 level of exhaustion, and on a failed throw the creature falls asleep for up to 24 hours or until dispelled (if the creature is attacked they must roll a Dc 18 Con Saving throw to wake up, if they fail they stay asleep).

This can be used once per long rest.