Hearthpwn

Works well against Aggro and has a good record against Reno Priest too. I used it from the start of the season to reach Diamond without difficulty. 

Keep Sword and Board and Athletic Studies against Aggro. Finding a Kargath Bladefist or Zilliax can completely stop certain opponents. Keep Ceremonial Maul, Gather Your Party and Commencement against slower decks. 

Troublemaker is incredible for clearing enemy minion lines, and playing it onto an empty board require an immediate response from the opponent. Commencement pulling Ragnaros the Firelord can also be match winning.

Try to use Dimensional Ripper early to make sure you don't run out of minions in your deck to recruit. Running out of minions in your deck is one of the risks of the deck, so only commit to Recruiting heavily if you know your opponent won't be able to clear your board easily. 

One of the most important aspects to playing the deck is after you reach turns 8,9 and 10. Just playing some of your minions directly from your hand can be crucial to winning matches. Scrapyard Colossus and Plagued Protodrake provide sticky boards that can leave you minions after enemy AOE. 

Overall the deck is really fun to play. I think a lot of people are surprised by the wave after wave of beefy minions you can pull out with little effort. Recruit aggressively against combo decks, but pace yourself against control decks.