Amazing game! The mechanics are really interesting and go well with the theme .
The aesthetics are fantastic. The UI just needs some minor tweaks. Like the mouse scroll doesn't work well on the left panel, it moves really slowly forcing you to use the drag controls instead. Fixing that is probably easy, but I'm not sure why you can't just fit all of the purchasing options without needing to scroll to start with. When hovering over a card in the hand, I think it would look a lot nice if they animated popping out a bit to indicate that you're hovering over it. Would make the game feel even more polished.
This is just nitpicking, I think the general vibe is excellent.
Well done!