Alight on the Wings Of Legend
Full name: Mordala Orehana. He was an advisor to the last tiefling emperor, Gaileth Agrento.
He cast the great ritual that bound dragons to the ground (see bindings of Orehana, was the possessor of the Deck of Many Things (see The Cards), and is said to have cast Tragar Mendor via use of the Void card.
When he cast Tragar Mendor into the Void, his soul was sucked in along with the demon/dragon. They were expected to both stay there forever. Orehana’s body remained behind, and had an unidentifiable magic aura on it. The body was hidden away.