Hearthpwn

Basically win the game with your opponents cards, and 90% of your wins will be after you demoralise them and they concede to you because you somehow ended up with 3 Sylvanas. This deck is very passive and if you survive through early, you will be rewarded late game. Majority of the time you will lose to aggros unless you get lucky with Auchenai + CoH early, but once you reach around the 6-8 turn mark, this is where the deck starts to shine.

Mulligan: 

Northshire Cleric, Mind Vision, Thoughtsteal, Jeweled Scarab

Vs. Paly/Hunter: Auchenai Soulpriest / Circle of Healing

Combos you want:

Shrinkmeister -> Shadow Word: Pain

Confuse -> Cabal Shadow Priest / Shadow Madness 

Shrinkmeister -> Cabal Shadow Priest

Shrinkmeister -> Shadow Madness

Shrinkmeister ->Shadow Madness -> [card]Recombobulator [/card]

Shrinkmeister -> Shadow Madness -> Youthful Brewmaster (If you add YB)

Sylvanas Windrunner + Faceless Manipulator (But you can honestly use FM for anything, which is why the card is so good)

Card draw:

Beware of mind visioning on turn one and ending up with their coin. 

Board Clear:

Auchenai Soulpriest -> Circle of Healing. You can also use Shadow Madness for a 2 for 1 removal on turn 4, your SW will also help for pesky belchers or deathlords. You need this to survive through that nasty early game. Other than that, you can only really rely on what your Mind Vision and Thoughtsteal give you. 

Replacements/Alternatives: 

The Black Knight

Prophet Velen

Recombobulator is just a bit of fun (and for the shadow madness combo to keep the card), feel free to use Youthful Brewmaster or another Mind Control Tech, although I find with 2 MCT's unless you're vsing aggro, there's not a lot of opportunity and it ends up being a dead 3/3 most of the game that I would usually end up using Recombobulator on.

2 Faceless Manipulators are also fine if you're running short on cards.  

Nefarian - Piloted Sky Golem

There could also definitely be room for Lorewalker Cho.

Examples:

That insta-concede after Mind Control + Faceless Manipulator.

Anndd... concede.

This deck is definitely more for fun but there is always room for improvement, advice is welcome.