Medicine (shamanism)

In shamanistic religions, a medicine is some magical object or ceremony, such as a medicine bag[?], that is used to control and direct supernatural forces. The term medicine also refers to the magical potential of the object or ceremony which is used for these purposes. Among the North American Indians[?], a medicine man or medicine woman[?] is someone who professes to have skills at manipulating supernatural forces and uses these skills to cure sickness, drive away evil spirits[?], and regulate the weather.