If you play with a new group, make sure you know what form of mulligan to use before you finish shuffling up, and after you discuss your favorite ways to count life
Another Final Fantasy IX alumni, Beatrix is clearly intended as a glue card to bring all the Equipment synergies in the deck together
Thundermane Dragon is thundering out of the eye of the storm, bringing with it all manner of creatures power 4 or greater from the top of your library
Combine all this with an easier quest system, where you can complete your objectives (things like "knock out 3 Basic Pokmon") in normal play, and you get into the meat of the game immediately
Not to mention Portent of Betrayal and Akroan Conscriptor
All in all, I'm not sure what to make of the Chaos Vault, Magic: The Gathering's name for a spate of Secret Lair 'experiments' that are planned for the coming months