The Restoration of Eiganjo It's weird to see The Restoration of Eiganjo on the list, but heres the logic: in theory you can discard the Plains you searched for in the first chapter and return it to play with its second one
You can buff Juri to be very strong, very quickly through some sacrifices, and then punch through and finish off opponents with Commander damage
There are also some effects like this that are specific to dinosaurs, like the saga on the backside of Huatli, Poet of Unity
Stormshadow Harbor Plane: Zaegoth You may play an additonal land during each of your turns
Item decks didnt really come together in The First Chapter, though they were fun to play around with
Green has a lot of creature tutor effects and land tutor effects, the best in the game on both accounts I would say