Arcades Sabboth

Arcades Sabboth was a mysterious figure from the Elder Dragon Wars. An Elder Dragon himself, Sabboth was one of the victors of the war, along with his brothers Nicol Bolas, Chromium Rhuell, Palladia-Mors, and his cousin Vaevictis Asmadi.

When Faralyn talked about the death of Rhuell's brother at the hands of Kristina, it is implied that Arcades was the one who died, since Bolas is the only other known brother.