With 281 cards in the set (101 commons, 80 uncommons, 60 rares, 20 mythic rares, 20 basic lands) and 68 more new cards in the four commander decks, theres a ton of new toys
As the name might imply, it's not really meant to be used in combat, as it leaves you wide open to abuse for a lengthy period of time (Though using it in midair offers a good degree of safety from many enemies)
Playing Thrumminbird on turn two comes with an added price in Commander games, though
Lets consider all of these rule-violating lands
While there are obvious auto-includes in this deck, its the more niche stuff that makes me excited
Loading up on creatures with power 4 or greater should give you whatever kind of advantage you're looking for