Extraordinary X-Men (2015-2017) #15

The X-Men's newest charge has become possessed by THE WORLD-EATER, an extradimensional entity whose sole purpose is to live up to its name. And it has its sights set on LIMBO next! Can Storm and Magik prevent it from reaching mutantkind's last refuge? Meanwhile, Iceman and Nightcrawler learn that saving Colossus from the clutches of Apocalypse comes at a price!