With several enchantment synergies and cards that want you to play multiple Rooms, you'll slowly unlock the House's many doors until you're able to swing in for lethal
95% of the time, the triggered ability probably isnt worth a removal spell thats going to be better sent towards Rhystic Study or Smothering Tithe, but once enough cards have been exiled, the risk from rolling a 20 is going to weigh on your opponents
The only one I saw of the five mythics was Jin-Gitaxias, which was a bit disappointing given how powerful and exciting these cards are
Also, it has a great suite of creatures, only most of them don't fly and are vulnerable to blue counter spells and red spot removal
Numerous "parallel cards" with different illustrations
An iconic moment, from an iconic movie