Superman #295

Father Time steals Superman’s costume and Superman follows it to 2975, a future unlike the future he knows, an “Earth after disaster.” There, Superman meets Jaxon, who wears his costume and the two battle until they end up back in 1975. Father Time arrives and reveals that he is a Green Lantern from the 30th century. He explains that the Time Trapper eliminated all the other possible timelines, leaving only the one in which civilization is destroyed by a Great Disaster, so he pitted Superman against Jaxon so that the energy their fight generated could restore all of the possible futures.