The X-Men have been on separate paths lately, disbanded and disheartened. With Professor Xavier still deceased, times are rough. What would it take to get this team back together? The greatest threat ever, obviously. Lucky for them such a threat is about to strike. This story arc is one of the boldest Marvel had delivered up to this point, spanning four issues, 49-52. We’ll see new enemies, new allies, and the return of an old favorite.