Synonyms for Hypnotic (same or very similar meaning)
WordNet sense 1 (a drug that induces sleep):
soporificWordNet sense 2 (attracting and holding interest as if by a spell):
mesmerizing, spellbinding, mesmericWordNet sense 3 (pleasing to the eye or mind especially through beauty or charm):
attractiveFrom the ODE community, based on WordNetadd/edit