Absolutely stunning visuals.
But pretty generic gameplay. Card games are difficult to make each card feel unique. Working with the two mechanics you have health and defenses, putting both effects on a single card could help. Even adding one extra mechanic, some kind of mana could help a lot. Where the smaller number cards have cheaper mana costs, it would really make cards start to feel unique. After that you get into more time-intensive ideas, like designing unique mechanics for new cards, or unique visuals.
Great work with the beautiful visuals though you certainly have that nailed. The cinematic black bars was a nice touch.