Scintillating stylist Marc Silvestri begins to craft his legacy as an X-Men art legend! Collecting two years of X-Men stories from the height of the late-'80s zeitgeist, The Uncanny X-Men Omnibus Vol. 6 delivers new characters, new creators and a whole lot of new trouble for Marvel's mutant phenomenon! This beautifully restored volume opens with the "Mutant Massacre," where the X-Men - alongside new member Psylocke - confront the genocidal threat of Sabretooth and the Marauders. It closes with "Fall of the Mutants," a time- and space-bending epic that propels the team to the Australian outback and into the crosshairs of the deadly Reavers. Rounding out this era are limited-series showdowns with the Avengers, the Fantastic Four and the devil himself, Mephisto; rare one-shots like Spider-Man vs. Wolverine; and a trove of Official Handbook of the Marvel Universe entries! COLLECTING: Uncanny X-Men (1981) #210-231, X-Men Annual (1970) #11, Mephisto Vs. (1987) #3-4, Spider-Man Vs. Wolverine (1987) #1, Fantastic Four vs X-Men (1987) #1-4, X-Men vs Avengers (1987) #1-4; material from Marvel Fanfare (1982) #38, Best of Marvel (1987), Official Handbook of the Marvel Universe: Deluxe Edition (1985)