Legendary: A Marvel Deck Building Game - X-Men ExpansionThe 13th expansion to the Legendary: A Marvel Deck Building Collectible Card Game from Upper Deck puts the spotlight squarely on the X Men. The 13th expansion to the Legendary: A Marvel Deck Building Game puts the spotlight squarely on the X Men. This set will bring to the game many of the X Men characters that have been overlooked since the inception of the Legendary game. This big box expansion has X Mens biggest heroes, including Psylocke and