 Harbinger then recruits heroes from the remaining Earths to lead an assault on the Anti-Monitor in the antimatter universe, using Alexander Luthor Jr.'s powers to open a portal between the limbo and antimatter universes.Pariah tracks down the Anti-Monitor at his fortress, and the heroes destroy a converter, powered by stellar energy, used to destroy the last five Earths; the injured Anti-Monitor retreats and Supergirl dies.During a lull in the war, the villains unite under Brainiac, who kills Earth-Two's Alexei Luthor while recruiting the Earth-One Lex Luthor to conquer the remaining Earths.