Deck Exchange

Each player brings a deck and battles 3 times. They battle the first time with their deck, the second time they exchange decks, and the third time with their decks once more. A player gets 1 point each time he or she won with his or her deck and 2 points when he or she won with his or her opponent's deck. With the results of the 3 battles, the player with the higher total number of points wins.