I really like this game concept, but I unfortunately struggle too hard against the third fight. I have tried a strategy where I purposefully get damaged to trigger the better effect of enrage, but I dont quite have enough high mana cards to execute that strategy.
I quit out of frustration when I realised that the fool had the one healing card in his hand, and of course he did use it when I didnt want him to. Now typing this comment, I realise that I could try this strategy without enforcing the use of opening gambit to avoid having mend in my hand, but it takes a bit too long to play back to that fight