I play casually and just so happened to find this, so I apologize if this isnt comprehensive. Ante 1 Buffoon pack has DNA, Perkeo is in big blind charm tag with a hermit in the first shop. Cryptid and Ecto show up in an early shop with enough rerolls. Brainstorm and Baron show up fairly early on, with Brainstorm being in the front of a shop or 1 reroll in, while Baron is deeper in a different shop. There is also a Yorick in a spectral pack in ante 3-4, but if you take him, all of your invisibles will turn into Yorick, so it might be better to not take him at all or get rid of him at some point. I believe there are 4 invisbles that I was able to find, but wasnt able to take them all due to not many natural negatives, so hand size and joker balance is an issue. Beyond that, there are tons of good tarot cards and sepctral cards early on in the shops. Most likely useable on other decks but I used ghost. Have Funn! 🫶 I also made the highlight jokers the first 5 you should find.