Uncanny X-Men #3 (2015)

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... Rated T+