X-Men: Days of Future Past
Chris Claremont and John Byrne (Writers); John Byrne and John Romita Jr. (Artists)
Relive the legendary first journey into the dystopian future of 2013 - where Sentinels stalk the Earth, and the X-Men are humanity's only hope...until they die! Also featuring the first appearance of Alpha Flight, the return of the Wendigo, the history of the X-Men from Cyclops himself...and a demon for Christmas!?
Uncanny X-Men #138-143, Annual #4