Save your game in two files. Then exit your game and go to Two-Player mode. Load the file that you want the cards to go to for player one in "P1 Settings" and then load the other file for player two "P2 Settings". Then, in "P1 Settings," go to "Bet". Bet any three cards (it doesn't matter which ones). Then, in "P2 Settings," go to "Bet". Bet the three cards that you would like to go to player one. Start the match and immediately beat player 2. Then your first file will have 3 more cards!