Early in the game, a gypsy will take your deck and swap the cards in it for weak cards. You cannot go around her, and you must go past her to enter the tournament. To keep your deck, swap all of the cards in it for cards in your trunk that you do not like or need. Walk past her, and after she swaps your deck, switch all of your original cards with the ones she gives you. This allows you to have an easier time beating the rest of the game.