X-Men Red by Al Ewing Vol. 4

The FALL OF X is felt on Arakko! As the Brotherhood reels from the cataclysmic events of the Hellfire Gala, Genesis takes advantage of the chaos - and declares war! Two vast mutant armies clash, and Arakko's idols fall. But this is only the beginning of a conflict that will remake the Red Planet. Under siege in Port Prometheus, Storm readies to hold the line against the ultimate bioweapon. Meanwhile, the Fisher King finds himself tormented by his strange new abilities - and the secrets in his memory might turn the tide of the Genesis War. But as the Four Horsemen ride across the land and daemon armies sweep through the skies, Genesis launches her endgame - and Storm and the Brotherhood must fight for their lives. The Revelation is here - and so is Apocalypse!