The End?

According to Bob Layton's website:

"This piece, penciled by Jackson (Butch) Guice was slated to be the cover to X-Factor #2--which featured a story revolving around the Beast--Hank McCoy facing off against the powerful size-changing mutant known as Tower.  However, it was deemed unsuitable because the editors felt it was too soon for a mere, single character on the cover of a team book."

http://www.boblayton.com/Art%20Gallery/artgallery_page4.htm