Hearthpwn

The game plan for this deck is very simple. You're essentially running a shitload of cheap/efficient removal and every time you use one of them you gain 3 armour. This makes you very good at stalling. To win, you need to:

1) Stall the early game

Gain 3 armour whenever you cast a spell. Murloc decks /hate/ the effective use of Whirlwind and Revenge. Battlecry/Deathrattle decks are susceptible as any other to your weapons and Upgrade!. Don't be afraid to take damage to the face early on while clearing the board with weapons, because as the game progresses you're going to end up healing in armour to absurd levels anyway.

2) Stall the mid-game

Murlocs, if they haven't won by turn 6 and have nothing on the board to pull bullshit plays out of, aren't going to win. Deathrattle and Battlecry choosers usually end up fighting for tempo in a universe where you don't have any commitment to the board anyway. Which lets you profit from Brawl if the other removal wasn't enough.

By this time you should be able to get some weapon hits in on the face. This is important, because you want them to be within reach of your lethal combo.

3) Collect the Pieces of Exodia Combo Pieces

If you've ever played a Warrior that runs Acolyte of Pains, you'll already be familiar with trying to milk value out of them. Try not to put one naked on a board unless you're going to use a whirlwind effect (Whirlwind/Death's Bite/Revenge) immediately- you want at least two cards out of the Acolyte. Though one is fine. None is really, really bad.

Emperor Thaurissan is required for your "true" OTK. Or rather, just one tick of him on the board with any of the constituent pieces that cost mana in your hand (Raging Worgen/Charge/Faceless Manipulator). If you haven't been able to put any weapon damage into the opponent's face, this will be necessary.

4) JOHN F#&$ING MADDEN

16: Raging Worgen + Charge + Inner Rage
20: Raging Worgen + Charge + Inner Rage + (Second Charge or Inner Rage)
32 (Thaurissan Required): Raging Worgen + Charge + Inner Rage +
Faceless Manipulator

It's CRUCIAL not to cast the Faceless Man until you've finished actually deploying all the other combo cards. I feel the need to say it because when I was newer I sometimes forgot and died tragically for it despite otherwise having the win.

Other tip: Shield Slam gives you the 3 armour BEFORE applying the damage, so if you cast it without any armour it's 3 damage removal. Or +3 extra damaged tacked on to whatever it would otherwise be.

If you're fighting against Murloc without any weapons or whirlwind effects in hand but with Upgrade! to start it is sometimes very helpful to just use the 1/3 weapon and smush out the babies as they come.