I like the idea and there are a lot of different cool cards! ^-^
The background music don't loop, and the game become completely silent after a while. I think some sound effects when moving and playing cards could also improve the game a lot.
My main issue is about the UIX: having to drag in the right space, click confirm and click on a tile for every single card is a bit annoying. You could try to reduce friction in many ways, for example you could assign the left mouse button to play cards and the right mouse button to move the character, or maybe implement some keyboard shortcuts.