This is a really cute concept. I especially liked the art and the sound design. As for the gameplay, you have a strong core set of mechanics, though right now RNG has a little too much influence - if you can find ways to give players a little more control over their cards, this could be great.
I also noticed a few typos. I'd recommend getting a friend to proofread if you want to work on this further. It's not like there's a ton of text, though, so it didn't really reduce my enjoyment of the game.
All in all, good effort!