Superman #257

In "Superman Battles the War-Horn!", an alien warrior wielding a powerful war horn arrives on Earth with a sinister mission: to steal the planet's nitrogen. As the horn's defenses activate, nature itself turns against Superman, forcing the Man of Steel to confront both the invader and the unleashed fury of the environment. With Lois Lane, Perry White, Clark Kent, and Jimmy Olsen caught in the chaos, Superman must find a way to stop the extraterrestrial threat before it's too late.

In a pivotal moment of cosmic reflection, Green Lantern Tomar-Re confronts the weight of his past as the Guardians of the Universe reframe his perceived failure on Krypton. Though they once considered baby Kal-El the future leader of the Green Lantern Corps, they now reveal that the planet’s destruction was not a defeat—but the necessary beginning of Superman’s destiny as the universe’s greatest champion.