The story of Koshchei/Koschei/Koshchey (and other variants thereof) is the one that always comes to mind for me where the origin for liches is concerned. He fits the bill in many ways, down to an equivalent of the phylactery, which must be destroyed to kill him.Napftor said:It has at least some of its origin with Russian folk tales about a character named Kotchkey the Deathless--a magician that wouldn't die (IIRC).