in big blind shop, there should be a stencil joker, grab it. In the first shop of ante 2, there is an invisible joker. once the invis coppies the stencil, you should find an arcana pack later on that holds yorick, over the corse of the run, you will pick up baseball card (good with the stencils as they are uncommon) and a fibonacci (also good, uncommon). While playing on ghost deck, you will find an aura and cryptid in the shop. use aura on an ace and it will be polychrome, then use cryptid. near the end of my run (ante 12) i found a deja vu, you can make a red seal polychrome lucky ace.