X-Cutioner's Song

When Cable appears to assassinate Professor X at a mutant rights rally, the X-Men and X-Factor hunt him down, only to discover that the true culprit is Stryfe, Cable's clone from the future. As Xavier lies dying from a techno-organic virus, the teams must confront Stryfe, Apocalypse, and the dark legacy of the Summers bloodline. The event deepens the mystery of Cable's origins and introduces the Legacy Virus that will plague mutantkind for years.