I like both of the genres you combined for this game--it was fun to play through!
I particularly enjoyed feeling like I was both defending myself and spreading out to take over the land. The final card and autoplay to finish was exciting, too!
As for things to polish, the tutorial was very helpful, but it still took some mental strain to get the mechanics figured out. A dedicated composer would be nice, too, to make the audio experience more pleasant and less repetitive.
Overall, this was unique, on theme, and an enjoyable experience. Great job! :)