Justice League of America #139

This giant-sized February 1977 issue promises an ambitious package — two all-new novels, 13 super-heroes, and 5 master-villains — making it one of the more ambitious single-issue offerings DC put on stands that year. Neal Adams' cover delivers a striking scene of chaos: the Flash takes a direct energy blast to the chest in the foreground while a crowd of heroes — including Black Canary, Green Arrow, Aquaman, Batman, and others — are staggered and struck down by converging beams, with a desperate speech bubble admitting there's nothing they can do to stop it. With Cary Bates scripting and Dick Dillin on interior art, "The Cosmic Conspiracy Against Adam Strange!" sounds like exactly the kind of sprawling, high-stakes JLA adventure this vivid, kinetic cover is built to tease.