incantation

thumb|19th century book of incantations, written by a Welsh physician

An incantation, spell, charm, enchantment, or bewitchery is a magical formula intended to trigger a magical effect on a person or objects. The formula can be spoken, sung, or chanted. An incantation can also be performed during ceremonial rituals or prayers. In the world of magic, wizards, witches, and fairies are common performers of incantations in culture and folklore.