Several incarnations of the 'mother goddess' take this moniker. Parvati, the most benevolent form, is the reincarnation of Sati, who threw herself into the fire. Durga is a demon-slayer who rides a lion into battle and carries a weapon in each of her many arms. Kali is a black-skinned goddess of destruction, who defeats the demon leader Raktavija by drinking all of his blood. Although Kali's dance can destroy the world, Shiva throws himself at her feet to calm her, turning her into Parvati.