He-Man and his fellow Masters of the Universe are now in movie theaters, and at IGN Live today, we had the exclusive debut of a video in which the stars of that film react to the just-released Masters of the Universe: Legends Unite cooperative card game. Nicholas Galitzine (“Adam / He-Man”), Camila Mendes (“Teela”) and Idris Elba (“Man-at-Arms”) got their own first look at the game and how their respective characters appear in it. This in turn inspires the trio…