Adventure Comics #323

This August 1964 DC issue puts Element Lad front and center as he faces down the glowing, radiating Cosmic Eye — a massive monolithic entity with an unnerving blue gaze — while Superboy and a group of fellow Legionnaires look on from a rocky ridge above. The cover dialogue crackles with tension, as Superboy urges Element Lad to use his transmutation power to survive, and Element Lad refuses to be the one Legionnaire who fails his assignment. With pencils by Curt Swan and inks by George Klein bringing the 30th century to vivid life, "The Eight Impossible Missions!" promises exactly the kind of high-stakes Legion adventure that made Adventure Comics such a treat in the Silver Age.