The X-Men have been facing a litany of challenges in Fall of X. The successes of the Krakoa Era have been negated by the ascent of Orchis and their anti-mutant sentiment, with only a handful of heroes left on the board to counter their moves. But things might have just gotten far more complicated for the X-Men, as one of their most dangerous foes is poised to gain a serious upgrade.
Source:https://www.cbr.com/x-men-fall-of-x-new-juggernaut-marvel/