WordNet sense 1 (surpassing the ordinary or normal):

uncanny

WordNet sense 2 (beyond what is ordinary or usual; highly unusual or exceptional or remarkable):

extraordinary

WordNet sense 3 (existing outside of or not in accordance with nature):

otherworldly, transcendental, nonnatural

WordNet sense 4 (not existing in nature or subject to explanation according to natural laws; not physical or material):

supernatural