Just played as a control warrior vs. Mage...
I dropped the 4/7 thaddius maker guy, he lasts a bit, eventually dies. On my Turn 9, I drop the 7/4. Opponent has 3 cards and his board is the 1/2 taunt from the sludge guy.
On his turn 9, he played a Faceless, getting his own 7/4, and a secret and a minion.
On my turn 10, I also Faceless the 7/4, getting a 2nd. His secret triggers, giving him a 2nd 7/4. I use Korkron Elite to clear the taunt, go to the face for 7. He's at 19 life.
On his turn 10, he frostbolts the Korkron, trades a 7/4 with mine and gives us both a Thaddius, then rams his other 7/4 into Thaddius to get two Thaddiuses. I think he dropped another minion, too. His final active minion goes to the face instead of trading...
At this point, I have 18 damage on the board and he has 19 life. I played a Cruel Taskmaster and did 20 for the win.