Extraordinary X-Men

Extraordinary X-Men is a comic series from Marvel Comics and the flagship X-Men title under the All-New, All-Different Marvel re-branding. The story takes place following the conclusion of the Secret Wars crossover event. In this comic series, mutants are again faced with possible extinction due to Terrigen Mist which causes exposed mutants to become sterile and possibly suffer from a fatal degenerative disease called "M-Pox". The gas also prevents the activation of the X-Gene. The series ended with #20.