It's fun as a concept, but it's a bit too punishing of a game during its early attempts. Making a random RNG guess in RNG game makes you lose HP pretty fast until you get to later stages where you have upgrades.
You're gonna spend most of your replays trying to buy as many HP related upgrades as possible
I get the challenge but with not knowing where any cards are your always set to loose health. Like a quick show off the cuff would be nice because the cards abilities always shuffle might as well give a fair chance to make it through all levels