Probably one of the best looking of all the submissions - I love the designs of the masks and the presentation around them. The floating table adds a lot of flair. The UI is also well put together.
Unfortunately, the weakest point is by far the gameplay. I really like the idea of playing blackjack with a hand and using health to draw more cards. However, since there is no hand limit, drawing cards is cheap and you regain health over time there is no reason not to keep drawing cards until you have a guaranteed blackjack for every round. It makes the game so easy that there's no reason to interact with the mask mechanic of the game.
I think the game would have benefitted a lot from an element of chaos you can't account for, such as the masks using their own powers as you fight them.