If you are an X fan or want to understand why there is such a fan base for X titles, you need look no further than this title.  The X-Men have some of the greatest villians in comic books to choose from and they rolled out another classic with Proteus.  The story has great character moments from X favorites like Rogue and Magneto.  The pacing is damn good and the art is good enough to keep up with the great story.  Probably the best Legacy issue since they added the adjective.