Hearthpwn

Buff your little Young Dragonhawk and win by turn 3 4!

Use Conceal to hide your little monster if you face Druids, Mages, Rogues or Warlocks.

Enjoy!

Edit: On the second day I got 15-15 in my first 30 brawls:

 
Edit 2: On the fourth day I got 15-17 in my first 32 brawls:

Didn't count all like the 2nd day, but here is what you can expect:

99% against Mill Druid (Not 100% cuz you can have bad luck like me on the picture below)
If you have 2 Conceal and 1 Young Dragonhawk in your first hand, you should be fine.
50% against Warlock with Silverware Golem (50% means that you must pray and draw properly if you want to win)
If you get 2 Young Dragonhawk and 1 Conceal and the rest is Cold Blood, you should win by turn four after using both Dragons and Conceal on turn 3. 
30% against Warlock with Fist of Jaraxxus (Just pray that the Fist don't knock out your lil monster)
50% against Mech Hunter without Annoy-o-Tron (Try to get 1~2 Dragons and the rest Cold Blood to finish him before he gets turn 4)
1% against Mech Hunter with Annoy-o-Tron (Sometimes you are really lucky and he doesn't draw it)
1% against Bolster Warrior (I got one distracted)
70% against other Druids
30% against Mages

Pics:
Turn 7 and still no Dragon (isn't a Mill Druid but you can get the idea)


Beating Silverware Golem deck

Beating Mech Hunters without Annoy-o-Tron

Note: After the first 15 wins I use to try Mech Hunter with Annoy-o-Tron, since it is also effective against Mill Druid as well as against Warlocks, so, if you have an extra dust give it a try.