Hearthpwn

Quote from sinshado >>

Quote from Foshizzel17 >>

The Darkness along with Fal'dorei Strider will wreck Razakas Priest in a new Rogue deck

 fal'dorei adds to your own deck, not to theirs.  

Quote from TheHoodedClaw >>

1. Zola the Gorgon will be the most regretted insta-craft of the set. Other than niche uses, players will realise that even the best minion in their deck is pretty poor when you slap another 3 mana on its cost in exchange for a bonus 2/2 body.

2. The Wild format will surge in popularity. A great many cards in this expansion are great in combination with cards and decks found only in Wild.

3. More than any expansion before it, Kobolds will yield archetypes which nobody has even considered from looking at spoilers.

Sticking my neck out a bit :

4. Corridor Creeper will find a home in standard, possibly in Zoo where you get minions out quickly and play in a tempo style. Hunter another strong possibility, if Hunter is even a thing in the new meta.

5. Elven Minstrel will quickly find players calling for a NERF!

6. Dragonslayer will be AWESOME!

7. Void Ripper will be my signature card. Tempted to throw a copy in all my decks just to generate some hatemail.

8. You will be hearing a lot more about Cavern Shinyfinder on Hearthpwn.