Of the 12 multicolor cards in the deck, only two don't require green mana
Currently, this Historic Brawl format is the closest thing that MTG Arena has to Commander, and thats saying a lot
That was a 20/21 creature with double strike, but without Flying or Trample
As of Innistrad: Midnight Hunt, the current set booster breakdown is: The first card can either be the usual marketing card, like in draft boosters, or it can be a card from "The List"
Lastly, there's an entire section on rules in magicthegatering.com's Magic Rules Center, which includes links to pretty much any rules resource you could imagine and then some
Bant Cube has a lot of powerful cards, but it is much lighter in the combo and general degeneracy department