Issue: #4
The exciting finale! On an island of doom, the X–Men and Fantastic Four fight to save the future! Lines will be drawn in the sand and enemies will be made, upending the Marvel Universe!
Creators: Chris Eliopoulos, Joe Caramagna, Terry Dodson, C. B. Cebulski, Rachel Dodson, Mark Brooks, Meghan Hetrick, Carlos Lao, Alanna Smith, Chip Zdarsky, Martin Biro, Ransom Getty, Tom Brevoort, Laura Martin
Characters: Wolverine, Bishop, Franklin Richards, Kitty Pryde, Lockheed, Iceman, Nightcrawler, Storm, Professor X, Invisible Woman, Beast, Cyclops, Magneto, Krakoa, Rogue, Doctor Doom, Emma Frost, Thing, Mister Fantastic, Valeria Richards