I think it's a really cool game, I mean who doesn't want to kill a dragon in 5 minutes? The only downside is the fact that the rules need explaining outside of the card itself on the Itch page.
The rules are simple, so once you've learnt them you don't really need to look at them again, but if you gave the card to a friend or found it in your wallet after forgetting about it, I recon there's be some confusion.