X-Men: Age of Apocalypse #3

Now, Magneto and his band of mutants have become the appointed protectors of the people. Many of Apocalypse´s elite mutant shock troopers still roam free and it´s up to the X-Men to bring them to justice. Their ranks have grown along with their legend and they X-Men continue to fight for a future they once thought they had all but lost.One former X-man would betrayed their teammates.