“Battle of the Super-Hyper Powers!”
Vartox returns to Earth from his new adopted planet Tynola to tell Lana goodby, and also to secretly ask Superman for help.
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Superman #356 (1939) is issue #356 of DC's Superman (1939–1986), with a cover date of February 1981. Written by Cary Bates and Paul S. Newman and drawn by José Delbo and Curt Swan.
Credits, characters and story details from the Grand Comics Database, CC BY-SA 4.0.