With mutantkind in extinction's crosshairs once more, Magneto leads a team of the deadliest X-Men to fight for the fate of their species! - But can the Master of Magnetism curb his killer instincts long enough to find out who's trying to speed up mutantkind's descent into the grave? - Plus: Fantomex! Triage! And an X-Man you probably thought you'd never see again...