For some reason there is a small glitch that when you click on a card it sometimes jumps to the top of the list and you have to scroll down and click on the card a 2nd time for it to work. there is also a glitch that the cards i entered dont filter properly with the filter function ( so you dont get the proper results when trying to show just cards from a certain color or set. I suggest using the card database to do your research on your deck and then just make the actual deck. Below is a quick video on how to make your deck. ( Please note that in the near future your deck can be either 9 or 10 cards, depending on if you choose to use a bakugan Trap or not )http://www.bakuganbuzz.com/apprentice-instructions/Deck Building.html