Hearthpwn

In fact you can cause up to x32 damage with your Hero Power with this deck. But in worst case only quad/4x damage.

How it works:

 Key card is clockwork automaton. Baku gives us double damage and clockwork automaton doubles it again. Play two clockworks, then you have 8 damage. PlayCube on clockwork automation and you get two of it. Play Faceless manipulator and let him become a clockwork, too. So, pretty clear so far.

And with a little well playing you have a lot of clockworks onto the board and in best case enough hero damage to beat your opponent with one shot.

But of course your opponent is not stupid and will try to destroy your clockworks as fast as possible. That's why it's important to consider some Things. 

1. For this reason there are so many taunts in my Deck. Make Sure clockwork ist always protected with taunts. Try to keep clockwork alive as long as possible, even when it means not to attack with it.

2. When your opponent can't destroy your clockworks due to your taunts, they will try to cast a spell on it. Here comes the next Point: PLAY SPELLBINDER THE TURN BEFORE YOU PLAY CLOCKWORK. Or in the same turn when you have enough mana. Cause when they try to cast a spell onto your clockwork, spellbinder will take over.

Spellbinder is a rare used secret, but I experienced it as one of the strongest. Even stronger than counterspell. It doesn't sound spectacular, but often effects a huge difference to your advantage.

So If you follow this advices, you will win most of the games.

Have fun playing.