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. But, 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 life-changing attack on Wolverine — and a showdown between Professor X and Magneto that must be seen to be believed!

COLLECTING: Uncanny X-Men (1981) 298-305, 315; X-Men Annual (1970) 17; X-Factor (1986) 87-92; X-Men Unlimited (1993) 1-2; X-Force (1991) 25; X-Men (1991) 25; Wolverine (1988) 75; Excalibur (1988) 71