Took this deck from Rank 11 to Rank 5 this month. It is quite good. I've had a lot of fun with it and while it does include the dreaded Embiggen, it does not focus or rely on it. Instead, this deck relies upon tempo until you get you quest completed and then a ton of big 0 mana dragons coming down quickly to overwhelm the late game. It is pretty consistent in reaching quest completion by turn 8-13 generally. And usually you have enough support on the low end to keep you afloat in the early to mid game.