Amazing artwork! I love the slow jazz music too, very chilled!
I wasn't sure about the cards. Why 7 in the hand and 17 overall? Is there an algorithm to make sure I can actually get enough information to complete the game or do I have to summon the gods of RNG to complete the game? It would really help to put the card you just played up next to the client's card while you're getting the result so that you can still see what it was when you get the result. I found myself quickly forgetting what I'd just played and being no better off as a result. I'm not sure roman numerals was the way to go. While they fit the theme extremely well, it just added another layer of complexity that I struggled with. Also, I wasn't sure if the Double Digits card applied to the roman numeral version of the number or the arabic version of the number.
Super cool, well polished game though! Loved all the little characters, item descriptions and theming!