You can have two Blue Print Jockers, one at the beginning of the game in Buffon Pack, and the other later. Depending on the build, you can make one of them negative, extremely strong. And the best part is that you can use any deck of cards. I used chess because I found the seed in it. I believe the best thing to do at the beginning is to make a club flush, as you get money for the package and the walker joker.