Omega apparently died creating the black hole which provided the raw power needed for time travel, turning the Gallifreyans into Lords of Time. (Some accounts suggest that Rassilon misled Omega into believing he would survive this mission.) Rassilon and the Other were left to pick up the pieces, with Rassilon harnessing the nucleus of the black hole to create the Eye of Harmony and becoming virtual dictator of Time Lord civilisation. As Rassilon's rule became more oppressive, the Other knew that his own days were numbered.