This issue is a variant of Super-Villain Team-Up (Marvel, 1975 series) #3.
Rick Buckler? credit removed and question mark removed from the Ed Hannigan credit that was suggested by Nick Caputo. The cover reprint in the Essential Super-Villain Team-Up volume clearly shows the Hannigan signature in the lower left hand of the cover, below Attuma. This is not visible on some/all copies of the book due to a printing error.