Collects Uncanny X-Men (1963) #129-143, Uncanny X-Men Annual (1970) #4, Marvel Treasury Edition (1974) #26-27, Phoenix: The Untold Story (1984), material from Marvel Team-Up (1972) #100. Chris Claremont and John Byrne's collaboration ranks among the greatest comics has ever known. But of their many iconic X-MEN stories, none was more epic or influential than the "Dark Phoenix Saga"! The X-Men have fought many battles, set out on galaxy-spanning adventures and grappled with enemies of limitless might, but nothing could prepare them for their most shocking fight: One of their own teammates, Jean Grey, has gained power beyond all comprehension, corrupting her into the Dark Phoenix! Now the X-Men must fight the woman they cherish, or her unquenchable fire will consume the universe itself! Also featuring Wolverine vs. Wendigo, the dystopian "Days of Future Past" and more!