Hearthpwn

Did you get Lyra as your Legendary? Wanting to delete the game? Don't jump!

Nice Deck. Let me try it out.

One of the take-aways from Dragon Priest was that (sometimes), the only way Priest could win was to steal it from the opponent's deck. This deck does this three times as much.

Mass Dispel? What's next, Purify?

Mass Dispel is currently one of the only ways to deal with a crazy stealth/+attack/windfury adapted minion.  It also cycles itself.

Lyra the Sunshard is a joke. I won't be able to play more than 2 or 3 cards.

She's certainly not top tier, but this deck runs Burgly Bully to gain a couple of coins to help charge her up further.

How can you call this spell cycle? You only have 11 spells.

7 of them cycle as draw of discovering a card.

Priest spells suck.

I think the word you want is Situational.  When they do apply, they are some of the most efficient out there (SW:P, SW:D, PW:Shield). They now have two of the best high cost random summon spells (Forbidden Shaping, Free From Amber)  and you'll probably get at least one while cycling. 

 You're going to get run over by aggro. 

Dirty Rat is a high-risk, high-reward turn 2 play. He is a 2/6 taunt and if they can't remove him immediately, he can be healed or buffed with talonpriest.  There's also the pyromancer-coin-PW:Shield that cleans up many boards on turn 3.