The card crafting mechanic is really interesting, with lots of tactical potential.
I also really liked the music in the background, I think it fit it very well.
The only problem I had with it gameplaywise is that you can't "take back" a card once you've played it. I found this to be a problem for the movement cards, because you can only see the grid you move on when you have the card played. So when I predicted a distance to be longer/shorter than it actually was, I was stuck with it.