When you are about to lose, force quit the app and restart it. The game's outcome will not be recorded, and you will be able to continue with a perfect record. You can win when scoring against an opponent or when you win all three match-ups. The match-up version awards you with three card picks instead of two. The CPU usually plays its best cards during the first two rounds. Also use that strategy to counter. Save your best card for later by going with your second best card first. Choose your opponent carefully by examining the rarity tier they are playing in, which is indicated by the shape and color of the trophy next to their MVP. The number of games they have played is also an important consideration. Try to choose opponents in a lower tier and with less games played than yourself. You can get potentially better rewards by being in a better tier with your team. Try to keep your meter in the upper side of the bar to remain one of the stronger players in the tier. When first starting and your bar is filled just slightly, it usually indicates that all the opponents that you will face will have better cards than yours.