Happened upon this game as I started analyzing games and game design.
I really enoyed the game! It has simple, yet non-standard card mechanics, and I enjoyed building my deck and fighting the various monsters.
My only criticism is that there was no music during gameplay, and that some cards like the bows were dead weight in a deck without arrows.
Also while the style is pretty interesting, somethimes the cards seem illegible with the white numbers merging with some of the graphics. I've also noticed that the text for the sacrifice event overflows.
Overall, great job!