He is to become a god once he ascends from the golden throne. A warp entity of terrible power. He will then be omnipresent throughout the Imperium and beyond, and none shall hide from His gaze. Traitors will suffer like Eldar did during the birth of Slaanesh. The occurence of "divine interventions" in moments of dire need will increase. He will be able to influence the Warp, to control Warp storms and other events. Gods of Chaos shall tremble.