An elder deity.

• In Seshnela, a name for Mostal
• He appears in the Orlanthi myth of The First People as the father of Darhudan and Darhudana with Uleria
• He taught the old gods with Uleria about Love.
• He and Uleria divided the spawns of Great Eater and Vassities, made a peace in the world.
• Since there is a myth in Wyrms Footprints which pairs Mostal and Uleria as the identity of the Twins, so the identity of Mostal with Urtiam is unlikely to be an error
• In Lunar Lore, he is the joint dance of Derita and Primoltus

Sources: Elder Secrets Book, Book of Heortling Mythology, Enclosure Magazine