Future State: Superman - Worlds of War (2021) #2

Plot

SUPERMAN: WORLDS AT WAR, PART TWO / MISTER MIRACLE: TIME AND EFFECT, PART TWO / MIDNIGHTER, PART TWO / BLACK RACER, PART TWO: RACE AGAINST DYING

Meet the rising champion of the gladiatorial pits of Warworld: Superman! The Man of Steel is still down in the pits duking it out with Mongul's hordes and working his way up to the big boss himself. But since it's Superman, there has to be more to this than a simple determination to win the title belt, right? Yes, because he's also got Midnighter out there on a mission to chase down a dangerous new power source...but the man standing in his way is all too familiar. Plus, the Black Racer smashes her way to freedom, and Mister Miracle, now trapped on Warworld himself, has to find his way back to the bottle city of Metropolis—and his only mode of transportation is a busted Boom Tube!