Hearthpwn

You can replace 0, 1, 8, 9 mana cards with the best cards you have. The rest you should keep.

Overview

The logic behind this deck is simple. Only include the cards you want to see at each mana level and fill the rest of the deck with 0-mana and 1-mana drops.

Clockwork allows you to get rid of the RNG associated with card draw. The key to this Tavern Brawl is to limit your deck to the specific cards that you want to draw at each mana level. We do this by only including 1 or 2 of each card at important mana levels and dumping a bunch of unimportant cards in less important mana levels. 

History

Here is the Druid version of the deck that does the same thing.

http://www.hearthpwn.com/decks/584091-cheap-f2p-clockwork-cthun-win

Filling out the Deck

Drop as many basic 1-mana cards as possible and replace them with better 0, 1, 8, 9-mana cards. You can increase the already high win rate of this deck with a handful of better cards.

0-mana - Add in all of your 0-mana cards and mulligan for them.

1-mana - Add in one or two sets of your most powerful 1-mana cards. 

8-9-mana - Add in any Epics or Legendary cards that you have in your collection. The more cards you can add in this mana level, the better. It will allow you to play high level drops if you don't get a C'thun kill. 8-mana drops are the best because they allow you to use your hero power as well.

2, 3, 4, 6, 7, 10-mana cards are the important cards. Don't add any other cards with these mana.

Doomguard may be replaced by Leeroy Jenkings

 

Mulligan Guide

If you are using the Doomguard, then mulligan C'thun or anything that you don't have a second copy of and you would like to play on the draw.

Strategy

Very simple.  Play the card that you draw each turn. Try to maintain board control. When your taunts come out, you can do face damage and let your opponent exchange minions. 

Other Replacements

7's can be altered a bit too, but the taunt at 7 is important. You can also throw in a Twin Emperor Vek'lor with the Bog Creepers

4's  can be changed out as well if you have a stronger 4-mana card, but it is hard to beat Iron Dwarf.

2, 3, 4, 6, 7, 10 should stay the same.

If you are missing a card, try to sub for something else strong.

It is the same drops every game. Play smart and maintain board control.