The NexusIntroduced in Wrath of the Lich King
In order to reestablish his dominance over magic, the blue Dragon Aspect, Malygos, has launched a ruthless campaign to sever the link between mortals and the arcane energies coursing through Azeroth. To this end, his blue dragonflight is redirecting the ley lines of the world to the Nexus, Malygos' towering lair.
In response to the blue dragons' offensive, the Kirin Tor, the elite magi of Dalaran, have allied themselves with the red dragonflight, who are charged with the preservation of life. Their combined forces are subverting the blue Aspect's offensive, but time is running out. The only question that remains now is... can Malygos be stopped before his crusade reaches its cataclysmic finale?