A really neat Call of Duty Zombies kind of game! It took a second to get used to the various power and card mechanics and I wish there was some sort of iframe for taking damage and maybe some visual indicator that you got hit. Most of the time I lost health I didn't even notice it had happened.
Some cool models and I really like that blizzard spell... I'd recommend describing the cards' power a little bit in your description of "How does your game represent "Power"?" section because they do fit the theme a bit!