The thrilling saga that commemorated the X-Men's 30th anniversary is brought to you in its entirety! As Magneto's acolytes amp up their attacks on homo sapiens everywhere, the X-teams join forces to put an end to their mad crusade against humanity once and for all. And as a mysterious disease begins creeping through the mutant community, claiming the lives of hated foe and dear friend alike, which X-man will buckle under the strain? Matters come to a head in the most shocking way possible, culminating in a shocking attack on Wolverine -- and a showdown between Professor X and Magneto that must be seen to be believed! Collecting UNCANNY X-MEN (1963) #298-305, 315 AND ANNUAL #17; X-FACTOR (1986) #87-92; X-MEN UNLIMITED (1993) #1-2; X-FORCE (1991) #25; X-MEN (1991) #25; WOLVERINE (1988) #75; AND EXCALIBUR (1988) #71.