Perennial Behemoth While Perennial Behemoth does exactly what the archetype wants, it does so at a high mana cost
You want to build a deck where you can activate her as many times as you need to in a single turn (Thornbite Staff, Intruder Alarm), sacrificing creatures over and over as you climb the cmc ladder and eventually win the game (Craterhoof Behemoth)
Recently, there has even been massive announcements for online versions of the card game, too
The Japanese/Chinese variants do have fewer cards per box, so it makes sense to be able to get two boxes
Well, just stop the other person from combo-ing off or locking you out on the first turn, and then play a Monastery Mentor and so many cheap or free cards that you kill in one or two hits, while also having a resilient, wide array of threats, to ensure removal cant stop you