I like the concept here, but I would probably prefer it if it played a bit quicker :). Some of the animations felt a bit slow.
Managed to get the third level to single digit HP. Felt quite tactical when I got to the end with careful choice of order of cards to play.
Don’t know if it would improve if you weren’t forced to play every card in your hand? There were rounds where I didn’t really have any good options. But it might be a bit too easy if you didn’t have to play everything