Malygos is the boss of the Eye of Eternity, the Onyxia-style raid instance in the Nexus. When players fight him, they will be assisted by Alexstrasza. With the assistance of the red dragonflight, players will be able to slay the Spell-Weaver, making him the first of the Dragon Aspects confirmed to die. For raid statistics info, go to Guild progression (WotLK).