Wow, this is a surprisingly similar idea to mine, but in a completely different setting and execution! I also had the "scale cards" idea but I went with a relaxing, simple balancing implementation, while you took the fantasy setting dungeon crawling route.
The game seems complex at first and it takes some time to truly grasp the mechanics and be able to do the math for all the resources at the same time to be able to progress. However, once you spent some time playing it, it becomes more fun. The art style is also fitting. Well done!