76 pages of Mutant Mayhem! Two uncanny stories!
The Gold Team battles inside the Negative Zone to save Nightcrawler and Kitty Pryde! By Marc Guggenheim and Ken Lashley!
The Blue Team travels back in time to face their sinister counterparts! By Cullen Bunn and RB Silva!
Featuring material first printed in X-Men: Gold #18-19 and X-Men: Blue #19-20.