Tavern is rigged at least it has been lately. I have spent 2m credits, and I would get a gold or purple hero to show up.

When they show up, I would click to the right or left of them, and they would 90% of the time stay in the same spot.

When they show up again, and I click on the spot where they appear, they move.

They show up again, and I click right or left of the spot where they appear, and they in the same spot.

Tavern is pre-determine just like arena fights, and I'm starting to have the suspicion that Labyrinth is the same way because everytime I get maze tokens during the final boss.