Hearthpwn

It's basically zoo deck, which is trying to utilize Regeneratin' Thug. 

Goal of this deck is go face, manage board and end the game between turns 5 and 7.

In the starting hand you want Knife Juggler or Shadow Ascendant and any one mana minion. Third and forth card doesn't matter that much, but if possible go for cards, which rises stats of other cards (if it has card draw it's bonus)

At the final turns you either overwhelm your opponent on board, or if he clears he should have low enough health, that Mind Blast or Leeroy Jenkins will finish the game.

From my experience It performes well, but my gameplay is from ranks 15 to 12. It's fast, so you can play around 3 games in 20 minutes.