Hearthpwn

This deck is designed to be a counter against a particular deck you are facing that is causing you problems. There are flexible card slots that you can freely replace and tech. It is built around a reliable Big Spells Mage shell minus cards that wouldn't fit this particular build. 

 

General strategy

1) Outlast your opponent. Remove their minions and control the board. N'Zoth, the Corruptor creates wide boards of taunt to protect us while Frost Lich Jaina is perfect value generator and healer. Baron Geddon with Jaina is insane catch up.

2) Remove your opponent's win condition. This is the purpose of the deck. See various tech choices below.

3)* Combo you can do with any build is: Brann Bronzebeard + X + Zola the Gorgon for either more value or further disruption.

 

The Tech

Arcanologist, Potion of Polymorph, Counterspell - very annoying, excellent against Big Priest and various slower Warlock builds. You can replace them with Flame Ward and Explosive Runes.

Arcane Keysmith creates additional Secrets and is overall flexible against both Aggro and Control. I suggest keeping this package.

 

Replaceable:

Zilliax - strong anti-aggro card

Skulking Geist - win condition against Jade Druid, useful against various different decks

Kezan Mystic - top choice against Secret Mage

 

Previous choices:

Dirty Rat - Combo killer, decent against aggro, combo decks currently not prominent

Gluttonous Ooze - good card against aggresive decks, useful against Hunter, Warrior

 

Other notable choices:

Hungry Crab - Murloc slayer, usually Shaman and Paladin

Golakka Crawler - various aggresive decks, usually Rogue and Warrior