1 Black Market
Players invest time, money, and a little of their soul into their decks, and they want to feel like they had an impact on the game
Then you can discard two cards at the beginning of your first main phase to return this to your hand from your graveyard, which is card disadvantage naturally but with madness, lands, discard triggers like Archfiend of Ifnir, and loads more, it's got value
High Fae Trickster is a Vedalken Orrery thats also a 4/2 flying faerie, with flash no less
Extended Art cards such as the Klauth, Unrivaled Ancient and Robe of Stars are wonderful and nearly every card in this set is just as stunning
I love the design space from both flavor and function standpoint, but I dont know how much more this deck will grow over the next few years