The Spider's exodus was decreed in 1173 by the Empress Iweko I upon the end of the Destroyer War. The tainted members of the recently Great Clan Spider Clan were sent to the ruined and abandoned region once known as the Ivory Kingdoms to bring them to the Empire, and they were proclaimed as the Iweko's Conquerors. They would bring order to the Colonies, pacifying the region under the supervision of the Dragon Clan.