To combat this, the Monitor recruits heroes and villains from across time and space to set up five towers, to help merge the multiverse back into one to make it stronger. However, he is murdered by his protégée, Harbinger, who is possessed by one of the Anti-Monitor's demons. His death releases enough energy to project two of the last five parallel Earths into a protective limbo. The Anti-Monitor recruits Psycho-Pirate to his cause, infusing him with part of his power to manipulate the heroes of Earth-4, Earth-S and Earth-X against the rest; this fails when all five Earths enter the limbo universe. 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.