| Lowers its target's metabolic rate, inducing hibernation. After awakening, the target will be unable to be put to sleep again for some time.
“Sweet dreams are made of this; who am I to disagree?”
When Ensorcelled Hibernation is cast and passes magic resistance check, the targeted monster is put to hibernation. This is a form of sleep where the monster is slightly harder to wake up. They may still awaken as normal as you spend time in their LOS or make noise, and successfully injuring a hibernating monster wakes it immediately.
Ensorcelled Hibernation can't affect cold resistant creatures, and it also won't work on the undead, nonliving or plants. Berserking monsters can't be hibernated. Monsters that awaken from this spell cannot be placed in hibernation again for a few dozen turns.
Couple this spell with Confuse when dealing with very dangerous opponents. A sleeping monster that is also confused will sleepwalk, and if it survives waking up, will probably stay confused (and thus mostly harmless) for a few more rounds.