It's blatantly obvious this is luck based. Their hero power is summon a few random minions that can be 2/6, 4/6, or 6/6. Kinda hard to do ANYTHING if all he gets are 4/6 and 6/6. Idk why it's random. That's horrid design. It should have been a set order of things like the collapsing temple. But with this you can get lucky and he gets weak troggs or you get steamrolled by golems. It's awful. Which is sad because these types of fights are cool, but the bullshit random minions ruins it.
First game, like 80% of his minions were the higher end ones, and I didn't see a single one of the aoe cards. God awful.