Thank you so much! We rushed this out for a Mini Game Jam, so we're very happy with the results of 3 or 4 days of work. We really liked working on this though, so we're looking forward to pushing it further and putting some polish on it!
The difficulty "scaling" was something I threw in the last few hours of the jam so we'd have "unlimited" levels to play, so I can appreciate that it doesn't quite match your access to new cards. I'd like to implement something like Slay the Spire ascensions and have a maximum level, maybe have fixed enemy layouts. We'll see how it plays!
Thank you again for the kind words and feedback!
(I also found Spades to be quite good :))