Step 1: Stay Alive, you have a lot of tools
Step 2: Alexstrasza on turn 9.
You're setting the oponent life to 15 to do 16 damage in the next turn. But,if Treachery works in a way that made Unlicensed Apothecary trigger itself during the board switch the total would be 21 damage.
If you need healing or more taunts, you can always run Stonehill Defender.