In the Duel Decks: Nissa vs. Ob Nixilis Planeswalker Nissa Revane gathers her forces to protect Zendikar from annihilation;2 ready-to-play 60-card decks;Duel Decks are a great way for two players to battle against each otherMagic the Gathering will again assemble some of the greatest singles cards of all time, Knights from across the land to end the reign of terror that has plagued their lands for centuries.