In fact, the new Festival in a Box may be so good that its actually a problem for MTG players
Momo, Rambunctious Rascal is a small flyer that on EtB deals 4 damage to target tapped creature an opponent controls, which is nice for small creature removal
It is still a very casual build
Cards that havent been reprinted in quite some time like Sygg, River Cutthroat and Oona, Queen of the Fae are clear standouts covering the majority of the decks value to begin with but cards such as Notorious Throng, Obelisk of Urd and the standard combination of Sol Ring plus Arcane Signet all drive this decks value through the rough before you include what is likely to be a new favourite Commander for many players supporting a Blue/Black creature-based strategy
Trumpeting Carnosaur synergizes well with Marauding Raptor because Trumpeting Carnosaur can be cast for cheaper and help pump Marauding Raptor when it enters
Add just a little recursion like Crucible of Worlds, Icetill Explorer, even an Echoing Deeps and this can establish lots of land-based combos