While there are some of Azurite Sea's best cards in the Emerald/Sapphire decks, it's the way that every card, including the more cannon fodder characters, come together that makes it such a useful and powerful deck
We got Estrid, the Masked, a planeswalker who can put Totem armor Auras on permanents and untap enchanted permanents
The addition of different-colored parallel bonus cards to Secret Lair sets is somewhat of an advancement in collectability tactics for WotC
Desolation Twin Remember that thing I said about creatures bigger than 10/10
Balthier and Fran Baylen, the Haymaker Byrke, Long Ear of the Law Finneas, Ace Archer Kwain, Itinerant Meddler Ms
Discard a card and sac the token to draw a card