Hearthpwn

 "Adam from Eden" - No Adventure Cheap Control Priest

Welcome,

this is my first deck I've posted. This is budget (epic replacements below) version of CTRL priest without  adventures. Good luck and let's destroy Face Hunters.

Mulligans

You want to get Northshire Cleric at the beggining of the game. You can also mulligan for some buffs like Velen's Chosen or Power Word: Shield, which are great cards. You can also keep Wild Pyromancer (especially if you have Coin), keep Injured Blademaster only if you have Circle of Healing. You can sometimes keep Holy Nova versus some Aggro decks (Hunter, Warlock, sometimes Shaman and Druid), but I don't reccomend it.

Why to use these cards? And some replacements 

Core cards (highly reccomended): Velen's Chosen, Injured Blademaster, Circle of Healing. These cards are essential, don't try to replace them.

You can only replace Circle of Healing, instead of it you could use Flash Heal, it's optional.

 Velen's Chosen can buff your Northshire Cleric for example and it lets you use Holy Nova for 3 damage.

Injured Blademaster + Circle of Healing/Flash Heal. Value.

Important cards (recommended): Wild Pyromancer,Auchenai Soulpriest, Holy Fire.

Wild Pyromancer is very hard to replace. Our little Pyro is very good versus Aggro decks. His abbility is to stop the pressure, so maybe some taunt minion? If you do have Naxxramas, go with Deathlord or you can try Zombie Chow. Shieldmaster is not that bad too.

 

Auchenai Soulpriest is amazing board clear, combined with Circle of Healing or Flash Heal for 5 damage to single target.

Other cards: 

- Light of Naaru can be replaced with Flash Heal if you don't run it instead of Circle of Healing.

- Thoughtsteal is card similar to Nefarian's effect (or Burgle). You can try Mind Vision. Or Shadow Madness if you have it.

Epics

- Cabal Shadow Priest + Shrinkmeister. Run Shrinkmeister only if you have Cabal Shadow Priest, this combo is very strong (you can steal Ysera for example). You could possibly run Temple Enforcer. You can playAnnoy-o-Tron instead of Shrinkmeister to stop Aggro.

- Lightbomb is an extremely strong card. You can kill Dr. Boom, Secret Paladin's board etc. It's effect is unique. You can try to run one moreShadow Word: Pain.

Wait! I have got some adventure wings!

If you do have at least some adventure wings it could make huge difference. Essential Adventure cards:

LOE

 

-Entomb. Entomb. Entomb. This card is the best removal in the game in my opinion. Replace SW:D with it or even Lightbomb.

- Museum Curator. Gives you Deathrattle card and lets you kill annoying X/1 minions, can be buffed by Velen's Chosen for great value.

- Excavated Evil. This great card against [card]Aggro can replace Lightbomb[/card].

Naxxramas

- Dark Cultist is possibly 3/7 for 3 Mana. You can run it instead of Shrinkmeister, and (?) Injured Blademaster (?). (IB only if you are really low on Dust).

- Zombie Chow is great card because it's 1 Mana 2/3 which is incredible. If yourZombie Chow dies with Auchenai Soulpriest on board it deals 5 damage instead of healing.

- Deathlord with Velen's Chosen is great and it stops Aggro decks. If it gets silenced it's sometimes even better.

BRM

Nothing that great, but you could try to make cheap Dragon Priest.

For Newbies: 

Aggro - aggresive decks, try to kill you ASAP: mostly Hunters, Warlocks, sometimes Druids and even Shamans.

Control - You. Try to clear the board and make pressure on your opponent. Trade a lot (one minion kills another minion).