[@MacabreFox] I'm fashinated by it too and I've read a lot about the many methods of divination used by cultures from all over. About a year and a half ago I started a diploma course to study a deck of Italian oracle cards. It is the national deck used there and very well known, La Vera Sibilla. From the structure I can tell it's mostly likely based on regular playing cards. I found it to be the right time and it's something that brings me closer to my Italian roots too.