Once the young Lei Shen had come of age and commanded his own legions, he announced his intent to awaken the gods. Only his most loyal of followers accompanied him where no mogu had dared tread: into the very heart of the Thundering Mountain, the sacred home of the one the mogu had called their master. What he found was illuminating: the titanic watcher Ra-den, who stood guard over a powerful titan device, the Engine of Nalak'sha. Lei Shen claimed dominion over both. It is said that he tore out the very heart of the mogu god. And from that hateful act, he gained power over wind and storm.