Infinite Crisis Fight For The Multiverse #8

"The first mission comes to an end as the battle to save Nil reaches its conclusion. Facing impossible odds against Nightmare Brainiac and his legion of Nightmare Metallos, the heroes' only hope is to reignite the defenses of the Monitor's tower. And the person they have to rely on to do this is none other than Lex Luthor of the Gaslight World!"