Mordenkainen's Lost Notebook
8-level Enchantment (ritual)
Choose a single target within range who can see and hear you. That target must succeed on a Constitution saving throw or fall into a magical slumber which lasts indefinitely. A willing target can choose to automatically fail the Constitution saving throw to accept the effect. As part of casting the spell, you must specify a criterion or set of criteria, such as “a kiss from a handsome prince,” which break the spell. If you fail to set criteria, the spell fails. No other stimuli are sufficient to break the spell. The target does not require food or drink, though it is unprotected from other sources of damage. If kept safe, it will “live” forever, but a kobold with a knife could kill it at will.