World of Warcraft: Cataclysm (or Cata for short) is the upcoming third expansion for World of Warcraft. Set primarily in a dramatically reforged Kalimdor and Eastern Kingdoms on the world of Azeroth, the expansion set follows the return of the evil Dragon Aspect Deathwing the Destroyer -- formerly known as the ancient guardian Neltharion the Earth Warder -- whose fiery arrival from Deepholm, the elemental plane of earth, causes a massive worldwide catastrophe known as The Shattering.