Visually astonishing game! And the card game idea seems super cool!
Some feedback id like to give you is to try and convey more information to the player, I was often confused about which enemies were at low health, having the their current hp number show would be nice. This way the player can strategize better, which I think its one of the core feelings of a card game.
That and I think I found a bug when zooming a card form a card booster. If the card disappears, it gets zoomed forever.
But overall great job with what you guys did!