In observance of the 300th issue of the title, the iconic X-Men: LEGACY writers Mike Carey, Christos Gage and Simon Spurrier return to tell the tale of the all-new X-Men! Mike Carey brings us the story involving Xavi, Professor Oh wait, he's dead. Well, Christ Gage invented tale with horn-longer-a. She died too. Simon! There's Simon Spurrier with