Over the thousands of years that magic has been evolving it has taken on many different forms, including shamanistic magic, which involves leaving the body and communing with otherworldly spirits and teachers; tribal magic, which is practiced by more primitive cultures to influence spirits associated with the tribal group and to counter evil sorcery directed at them; voodoo, a mix of West African religions, Christianity, and local beliefs present in the West Indies at the time of the slave trade; witchcraft, originated as a synthesis of various folk religious practices and mythologies from the Middle Ages; and Satanism, the worship of the devil.