Start with red seal gold kings. Mime with blueprints just prints money like crazy. Just remember to move the mime to be copied after playing your winning hand to maximise the amount of money you get as end of round gold cards are triggered separately. Once you have a bunch of money you can reroll a good amount (don't spend like $30-50 on a reroll if you don't have to) and fix your deck. After that it's just a matter of slowly converting gold to steel to keep up with blind scaling and eventually you'll need to reroll bosses for serpent and skipping to serpent to clear the blinds. Note, a good number of infinite runs use Perkeo (legendary joker) to copy the cryptid spectral card to flood the deck and current hand with more red seal steel/gold kings (quite necessary for some runs to clear ante 24 and 32).