Hearthpwn

I've had a tremendous amount of succes with this deck.  
It's pretty aggressive, but even in longer games you can still win. I've won against control warriors after losing my board almost countless times. The tempo is this deck is insane, while your button makes it so you always have pressure even when running low(er) on cards. I've lost 1 game against control mage, and lost 1 game turn 4 against Pirate Warrior (5/6 worth of stats turn 1 without coin seems fair?) 

Mulligan for: Lost in the Jungle, Muster for Battle, Righteous Cause, Brazen Zealot

• When going 2nd, when you have no 1-drop, always coin into hero-power.
• Solemn Vigil makes it so you can often draw 2 cards for 0 mana. In my experience with this deck, 1 copy of Divine Favor is enough.
• Always keep track of your Righteous Cause quest progress: luckily, if you're on 4/5 minions summoned, and you use Muster for Battle for example, all of them will get +1/+1. 
• You can attack pretty much every single turn with your Light's Justice weapon, because you get it from both Muster for Battles and Libram of Justice. Attack every turn because you also need to use Unidentified Maul and Vinecleaver
• Attack face aggressively, so your opponent is forced to trade with you instead. Only take out serious threats to your board or to protect cards like Steward of Darkshire or Mukla's Champion