It's hard to say, but here are four decks we can recommend right now
(9/22/2011) Moonmist will prevent combat damage dealt by a creature that isn't a Werewolf or a Wolf even if that creature wasn't on the battlefield (or was a Werewolf or a Wolf) when Moonmist resolved.
Often you will be faced with the choice of Twisting now for half their hand due to your mana restrictions or Twisting next turn for likely as many card due to them having so few left at that point
Not only that, but several cards from the FF set went on to become game-changers for the TCG, like Magic: The Gathering 's Vivi Ornitier terrorizing the Standard format
Hashaton, Scarab's Fist is amazing with enablers and mana costs to cheat on Angel of the Ruins and Nezahal, Primal Tide
Consign to Memory I know its weird to talk about a niche card as one of the best cards for the format, but Eldrazi and colorless decks are a menace