So, I played the game (I had a bug at first, and the player and reward card didn't show up, but after some time they did. I don't know how you could reproduce it though) and the first time it was a bit confusing and by the time I got the idea I finished it (I suggest you make the game a bit harder and longer). So I played with it a bit more, and I am not sure why you didn't put favorable cards in too (vards that take mp less then they give hp or vice versa). That might encourage people to go back and forth between columns, and making harder decisions. Also, if that won't be too much work, I suggest adding another stat. Then the player will need to juggle more stats, and it will become much harder. Maybe you can make it optional?
Viewing post in Play-testing Circle - come play my game, I'll play yours
first bug: There is no loading screen, so it's possible that the game just didn't finish loading. I'll fix it soon enough.
Yes, multiple people have commented on it being too easy. I am working on adding more levels soon.
As for new stats, I am working on elemental types right now (fire, water, wind). I also noticed that there are no hard decisions yet. I'll keep it in mind as I develop the game.
Thanks so much for giving precise feedback. You rock!