1. You need all 329 Madden Cards.
2. Pick a Madden Card you don't want, like Cheerleader Card and sell all the cards you have for it till you have zero for that card.
3. Start buying Madden Cards, each time you buy a pack of Madden card you will receive a John Madden #298.
4.Once you have 15 John Madden #298, sell back 14 of them.
Don't keep buying cards after 15, it will put you back to zero John Madden #298