The gold letters would be a feature of a reverse holo variant of a card thatd usually be holo
Once Claire DLoon, Joy Sculptor enters the battlefield, for the rest of the game, all tokens you make are permanent cards, meaning if they were to leave the battlefield for any reason, they continue to remain real cards instead of disappearing
Funny how Renowned Weaponsmith basically has half of an effect, since Vial of Dragonfire has not been released yet (and obviously will be in Dragons of Tarkir)
Affinity decks love Inkmoth Nexus as well, and it's occasionally used as a win condition in some combo decks
Then, while completely unannounced and hidden by the game (a repeated issue), there are also a bunch of new Solo Step-Up Battle challenges to complete, offering five more hourglasses for each stage