The rarest Chris Claremont X-Men tale of all, finally available to the masses — alongside the all-time classic that inspired it! Revisit the nightmarish world of tomorrow that is Days of Future Past in a revelatory prelude that was previously only available in a limited edition hardcover — written by the legendary scribe and illustrated by his X-TREME X-MEN collaborator, Salvador Larroca! Discover at last how the surviving X-Men saved one of their own, Rachel Summers, from her torment as a Hound — and find out which surprising faces had a vital part to play in the mutant resistance! Presented alongside the original saga in which Claremont and John Byrne unveiled their darkly dystopian vision of the future Marvel Universe — where Sentinels stalk the Earth, and the X-Men are humanity's only hope... until they die! Plus: bonus materials celebrating Chris Claremont's fifty-plus years in comics! Reprinting MARVEL PARAGON COLLECTION: CHRIS CLAREMONT – UNCANNY X-MEN #140.5, X-MEN (1963) #141 and UNCANNY X-MEN (1981) #142.