1. getting as an early (1.st) opponent the mage one with the hero power reduction is pain in the butt,
2. getting Wroome boss as late game oponent is just instant lost for about majority of the decks.
3. Best experience with burgle Rogue with stealing shrine, BY FAR. Though I got lucky with the last boss being armor stacking shrine-dependant, while managing to steal their only aoe defense.
4. Discard warlock can be quite funny, too, with the discard-summon shrine.