Here's part of that poster with Buscema smoking in peace where the Silver Surfer be-devils him with cosmic rays. Although I would be more worried about Mephisto rising up out of the smoke.
I found the pencil rough that John Buscema produced, showing a much larger piece. It has Conan, Thor, Iron Man, Hulk, etc.
Anyone know where I can get a scan of the full finished poster? Nuff Said!
Update: Comments from my old MT blog...