X Deck is a cyclical stack. Given any card in the stack, you can almost instantly know the next card. It is based on a couple of simple algorithms. The stack looks quite random both value-wise as well as suit-wise. An equally easy variation X Deck 2 is also included. Easy to learn and simple to use, you should be able to get this down in a few minutes.
1st edition 2022, PDF 9 pages.
word count: 2204 which is equivalent to 8 standard pages of text