If you buy Grabber in Ante 1, the Nacho voucher shows like 1 or 2 shops later (can help in black deck). First shop has Riff Raff, try to win in one hand to buy it and survive the first ante. After that, growing Castle and Ride the bus makes winning easy. As for vouchers, there´s Overstock and Crystal Ball (and their upgrades if you get them). I also spotted Bootstraps somewhere in ante 4 i think? And if you buy Omen Globe you can get an Ectoplasm in an arcana pack in ante 6 or 7