Phantom Zone
Jax-Ur reveals to Superman that he disrupted his powers knowing that Superman would trace the origin of the disruption to the Phantom Zone. Ur's son can control all Kryptonian technology with his telekinetic powers, except for the Phantom Zone Projector because it has too many safeguards. Superman would have been the only one capable of opening the Phantom Zone, except he had made Terry McGinnis, the new Batman, one of the authorized users of the Phantom Zone Projector before Superman went into the Phantom Zone. Jax-Ur wants to use Batman's body to unleash every last inmate of the Phantom Zone which will then pave the way for Jax-Ur to rule Earth. He tells Superman that Earth will "die far more slowly and painfully than Krypton as its enslaved inhabitants spend their short, useless lives building a new Krypton, ruled by me".