I Misclicked Class

Priest (15)

Circle of Healing x2
Used to heal Blademasters to full, draw cards with Northshire Cleric, or as a sweeper with Auchenai Soulpriest.
Holy Smite x2
Useful for removal of 1- or 2-drops or for trading up.
Northshire Cleric x2
Don't drop these until you can get full value from their ability.
Power Word: Shield x2
Use these in order to trade up or draw a card in a pinch.
Auchenai Soulpriest x2
Combo these with Circle of Healing for sweeping or as a weaker Chillwind Yeti.
Holy Nova x2
Powerful sweeper, great combo with Northshire Cleric. Use after trades when possible to get max healing/damage combination.
Cabal Shadow Priest x2
Don't be afraid to play this like a Chillwind Yeti if it establishes board presence even if it doesn't take advantage of its battlecry.
Mind Control
Take away the high value cards from your opponent. Make sure they're worth your entire turn.

Neutral (15)

Ancient Watcher x2
Can be activated with Sunfury Protector or Defender of Argus to create a powerful early game wall to impede aggro decks.
Nat Pagle
Potentially great card draw or maybe just a 0/4 that sits there. Can hide behind taunts or be taunted to protect from aggro decks.
Sunfury Protector x2
Set up taunts to hide our valuable cards like Nat Pagle/Northshire Cleric or to protect your life total from aggro decks.
Injured Blademaster x2
A high value card that becomes even more valuable once healed back to 4/7.
Defender of Argus x2
Set up even stronger taunts than Sunfury Protector, can also help cards trade up.
Faceless Manipulator x2
Use to duplicate important cards of either yours or the opponent.
Cairne Bloodhoof
A high-value card with good trade value. Two Chillwind Yeti for the price of one and a half.
The Black Knight
Great 2-for-1 card due to its battlecry. At worst, a high-cost Chillwind Yeti.
Ragnaros the Firelord
Great to play on an empty board, otherwise start praying to RNGesus.
Ysera
Being out for more than a turn gives amazing card advantage along with amazing individual cards.

Dust Cost: 10680

Common: 40 x2 = 80
Rare: 100 x10 = 1000
Epic: 400 x4 = 1600
Legendary: 1600 x5 = 8000

A versatile priest deck that has many ways of dealing with aggro decks that can easily transition into a midrange or late game deck.