Issue: #4
The clock is winding down for mutantkind and one of the X-Men's oldest foes has come to speed up the process: MISTER SINISTER has returned! And he's bringing the X-Men face-to-face with their greatest fear...As the first chapter of EXTRAORDINARY X-MEN races to its exciting conclusion, one thing's for sure for this team of all-new, all-different X-Men: Not everyone will emerge unscathed.
First appearances: Cyclops (Clone)
Creators: Alan Fine, Axel Alonso, Dan Buckley, Jeff Lemire, Joe Quesada, Mark Paniccia, Joe Caramagna, Daniel Ketchum, Victor Olazaba, Christina Harrington, Edgar Delgado, Humberto Ramos
Characters: Storm, Wolverine, Mr. Sinister, Colossus, Cyclops, Iceman, Jean Grey, Nightcrawler, Coda, Cerebra, Aries, Azimuth, Forge, Cyclops (Clone), Magik, Chimera, Anole