This one looks pretty good. Lots of utility - shadow word pain, cabal shadow priest, maaaaybe shadow word horror, plus you can just use it in fair creature combat.
wow I'm really looking forward to trying this card, can't wait to Cabal some Emperors/Slyvanases
Mark of the Lotus looks good too. Break even point is like, two minions and one of the minions can attack the same turn. You'd want it in a Face Druid deck, and maybe you can package it with Violet Teacher in slower Druid deck.
Everyone was pretty much expecting Blizzard to shower Priest with very strong cards this expansion. Seems like Blizzard's idea of balance is giving every class a turn to be on top like musical chairs.