The deck is basically a Jade Druid with the crucial addition of Archmage Vargoth. His sinergy with Oaken Summons carries games on itself.
The other notable sinergies with Vargoth are Swipe and Jade Idol, though the most important of the two is the sinergy with Swipe. The reason is that Swipe can only target opponents.
To maximise the probability of pulling off the Oaken Summons + Vargoth combo, there are only three targettable minions, one of which is a new entry: Hecklebot.
Here, the reason is that when summoned with Oaken Summons, it is strictly better than the alternatives, and even when played from the hand, it is not that bad. In some games it can even summon a Skulking Geist, thus winning (i.e. not immediately losing) the game on its own. Last but not least, the one-of of Gadgetzan Auctioneer is (usually, but not only) for the ultra-late game when the deck is composed mainly of Jade Idols.