Traditional Altaian shamanism is rich with mythology and supernatural beings. Popular deities included Yerlik, the god of the underworld and Oyrot-Khan, a sagely and heroic figure who is a composite blend taken from historical Zungarian (Oirat) Khans and ancient legendary heroes. However, with many migrations, settlement changes, and the presence of the Russians and their eventual union with the Russian Empire, the Altaians encountered three world religions: Islam, Buddhism, and Christianity.