Superman #357

Superman #357 (March 1981) promises a genuinely wild cosmic ride, with cover art by Ross Andru and Dick Giordano depicting the Man of Steel diving heroically into the maw of an enormous space creature to rescue Vartox, who desperately pleads for him to turn back before they're both consumed. The cover tagline — "Two powerful heroes in a struggle against the mightiest jaws in the universe!" — sets up a thrilling team-up under extraordinary stakes. As a bonus, the issue also touts an extra Superman 2020 story, making this a particularly generous package from DC's early-'80s lineup.