I really enjoyed playing at first but near last prime masters it became frustrating cause battles started to feel not about outsmarting or figuring out unique way against different decks, but about cheesing ridiculously overpowered bosses who have just infinite energy(wow I beat 89 and get this gem, so sad I can use it only with 43 because I don't have 170 energy, I have literally less than this costs), with some absolutely not interesting strats.
Maybe I am stupid, but from 71 it was not any fun, it was just "my gems-generating thing generates more gems than your gems-generating thing". I beat 71 and 79 with deck "23, 43, 77 and many 59-s", it is boring deck so it's cool that it stops work later, but because almost anything doesn't work on 83 and 89, my winning decks for these levels are almost full of 1-s, I don't think this is interesting.
Also, I don't like 89 and 97 cause stealing is just too random sometimes and you can just keep restarting trying to get better first turns(and I was doing so cause of frustration).
I understand that many things I didn't like or became frustrated of can be not an objective problem, but I hope this feedback will be any helpful, cause I really liked this game but also was really frustrated from some point.
P.S. Also any hints on 97 would be appreciated :)