It's a fun concept, but even as someone who plays Hearthstone and similar, it was hard to understand what to do at first. And then when I reached the dark portal level, it started glitching out and I couldn't restart or continue!
Yeah, I hoped the game would be clear without real tutorial but I guess it's better to do that in the future! And yeah for some reason that portal level is bugged but still can't figure out why D: but I hope you still enjoyed the game, thank you for playing!