and maybe it's better to have a deck with a fixed number of cards and a set order, so it's not quite as random and involves more strategy, like in Clash Royale for example. But that's just an idea, I don't know if that would actually be better in the end.
very addictive, nice game. you should build on that. ive found a bug, where you could lose lives after defeating the molten boss from the card cooldown damage. and i would like to see some mechanic that you can counter the boss because in late game your instant dead if you dont have lucky cards