If you put one of them onto the battlefield without casting it, you get the front face (the secret identity face in this set)
Non-Mutating Kaiju These giant monsters can be mutated onto, but they just can't do it on their own, as they don't have the Mutate ability
Another idea they explored was having it come with pieces of bubble gum, but putting something edible in the booster packs made them subject to stricter rules which could not be complied with
Seeing as players begin with 40 life in Commander, winning the game with this Cat Beast is fairly trivial in a dedicated lifegain shell, though having some redundancy via Test of Endurance, or (for the devoted) Celestial Convergence might be a good idea, too
Seek Thrills is probably the worst part, but Ive played Temur Adventures before, and an ability like that could draw a lot of Brazen Borrowers and Bonecrusher Giants
The more of these types of lands you have, the better