Instead of earning your decks while in game you can buy them at a small price. With this downloadable content you can unlock this deck and use it at your discretion forever. This is a great thing to do but you might be wasting your money if you already know that you can unlock the deck already in game while just playing. This purchase just makes customizing decks easier and more convenient since you'll be unlocking the deck right away. I do suggest buying this little shortcut if you are too lazy to earn it while in game or think you can't earn it while in game. If you plan to play online then its a great idea to buy this downloadable content to make sure your not at a disadvantage while playing your opponents. To unlock decks in game you have to beat certain players in the campaign which at times can be a challenge but very rewarding since you unlock decks. This DLC deck unlock is there if you need it and if you know you don't then don't buy it and earn all the decks while in game.