Hearthpwn

Hi. I am COOokie.

I know this deck is really expensive but it also is really powerful and most of all :
FUN TO PLAY WITH.

The goal is to control your opponent's board the most you can until you deliver him a sudden pain.

As you can see, aside [card]Bloodmage Thalnos[/card], there is no creatures that cost less than 5.
Therefore I add 2 [card]Mind Vision[/card] 2 Thoughtsteal and 2 Mindgames.
Which is enough with your control to sustain during the first rounds.
No need to mention that when you pull an insane creature with your Mindgames your foe does only want to cry. Or waste control on it.

I put only one Cabal Shadow Priest but you can remove a Holy Fire if you see that the meta is, once again, zoo/aggro-oriented. But keep your 2 Holy Nova and at least 1 Mass Dispel

On low creatures, I prefer to use Shadow Word: Pain rather than Holy Smite just because if later you get your Prophet, 4 dmg for 1 mana is Gold.

Prophet Velen is mandatory.
Your Holy Smite Mind Blast  Holy Nova Holy Fire and heroic power are now insane! 
As a finisher, I use to wait until I have 9 mana before playing the Prophet so that I have my 2 mana for a 10 blast in-his-face.

Bloodmage Thalnos could help to draw or add some cheap spell power.

[card]Loatheb [/card] is just because I like to see miracle rogues crying. And even against a zoo, this card is really powerful, you shoud keep it.

Baron Geddon Always nice to clean a board with low creatures. In fact it's nice enough for your opponent to focus his attention on him. You just inflict him 2dmg, he doesn't really 9 more next turn.

Ragnaros the Firelord is always a good choice. Against a bit creature, or after a cleaned board. But you could probably swap it with something like The Black Knight or Sylvanas Windrunner.

Alexstrasza because it's turn 9, your opponent plays a heal/armor hero and none of you succeed at making damages ? Too bad, you have 15hp now. It could also save your life obviously.

The Molten Giant are one my favourite card.especially under 10hp when you are able to pop 2 8/8 for 0 mana with a big smile. Usually your opponent knows he is doomed.

 Edit : MULLIGAN

You should look for every low-cost cards like Mind Vision Lightwell Holy Smite Shadow Word: Pain Thoughtsteal and also Mindgames if you have The  Coin. Holy Nova too if you play against aggro/zoo

 Keeping Loatheb against Miracle is a good choice as well.

The good thing with this deck is that you play most of the time the same way. 
Control your opponent, steal his cards and spells, drive him crazy so that he could do nothing and when you start to feel the mana, just let your big creatures do the job.

Thanks for reading! And judging as well!
Feedback is more than welcome.
If you have any questions or suggestions, feel free to join the debate!