There’s a reason Days of Future Past is one of the best known storylines in comic book history. Many many many reasons. But the above danger room scene might be my favorite. Anyway, if you don’t know this story I’m not telling it here. It’s probably the single best X-Men story of all time, and maybe even better known than the death of Phoenix. Kitty joins the team, but it’s also the first time Mystique appears in the pages of X-Men, coming over from Chris Claremont’s run on Ms. Marvel.
Creators: Claremont and John Byrne