Although its unlikely to be the most popular of the Enchanted in this set, its still cool to see and gorgeous artwork
If you can get a Mad Hatter, Gracious Host down after turn five, you'll almost always get to draw one or two more cards, which can give you a big card advantage over your opponent, especially if your Flynn Rider forced them to discard from their hand
Turning mana directly into cards later in the game can be pretty useful, too
(If a permanent with a finality counter on it would be put into a graveyard from the battlefield, exile it instead.) Finality counters work on any permanent, not only creatures
At the beginning of your end step, choose a card type, then reveal the top two cards of your library