The core stuff from this set for these formats was deep, and there were two more Top Tens that my normal three and then three honorable mention, four in the last one for a nice and even Top 40
Keruga, the Macrosage It's hard to imagine the upside of building a deck with no one or two-CMC cards, but if that's your jam I think it makes sense to add Keruga as your companion
Creature - Illusion Bear Color tag templates(None) Platypus-Bear Defender When this creature enters, mill two cards
Plus, you get to align yourself with one other player which is sometimes better than granting the whole table an extra card
Magic: The Gathering Comprehensive Rules , 701.5
Hopefully, this wont be necessary, but its better to be safe than sorry.