Hypnosis or hypnotic, etc.
Hypnos, son of Nyx (Night) and brother of Thanatos (death), was the god of sleep and father of Morpheus, the god of dreams. Hypnosis is a sleep-like condition in which the person becomes susceptible to suggestion. Hypnotic, as an adjective, means to pertain to or induce hypnosis. As a noun it refers to the person hypnotized, something that promotes hypnotism, or means simply a soporific, that which induces sleep. Hypnogogic refers to a drug that produces sleep or describes the state immediately preceding sleep, while hypnopompic refers to the state immediately preceding awakening; both states may be marked by visual or auditory hallucination as well as sleep-induced paralysis. Hypnophobia is a pathological fear of sleep.