Giant-Size X-Men #4

Plot

HICKMAN AND REIS TAKE ON THE WORLD! The hit creative team of Jonathan Hickman & Rod Reis (NEW MUTANTS) turn their attention to the covert activities of the Weapon Plus program’s Weapon XIII! A bred killer who choses the life of a gentleman super-thief, Fantomex has always defied expectations... For example, who would expect him to break into the World, the artificial realm of his creation? And then again? And then…again?