Planechase cards are oversized, and do not fit inside a normal deck box
Eight of the Top 10 cards in todays list are creatures, as well as our honorable mention
You then need to figure out what is consistent, and how much damage you'd need to cover if Roaring Moon does get knocked out by a 1-prizer.
In a blog post, Wizards gave the example of Omnath, Locus of Creation, a previously banned card that will be reintroduced with an additional mana cost and an altered ability (it will now let you scry one card instead of drawing a card)
Designed around a specific creature type, these decks are all in on synergy between your creatures and spells
Since it has menace, the more it grows, the more dangerous it gets