I just utterly destroyed a rogue (who also was a golden hero with over 500 wins in ranked) with my priest deck.
I was first and played one of the Northshire Clerics. He didn't play anything. I then played my Unstable Ghoul, and smacked him with the cleric. With that play, he just sat there forever (moving over his cards, and hero power), and finally when time was running out popped his hero power, but didn't attack (since it would have just given me something to heal and get a card while he would have lost more health).
I then played a Dark Cultist (on the other side of the ghoul, so he couldn't just use betrayal and kill the cleric with it), and hit him for 2 more damage (one each from the cleric and ghoul). He pondered for a bit, and then played the coin, a sap on the ghoul, and a betrayal on the Cultist to kill the cleric (so it cost him 3 cards to get rid of my first play), and hit my hero with his knife.
I played another Dark Cultist and attacked him with the one I had out (so he is now down to 24 health). He plays a 2/2 battlecry each player draws 2 cards murlock. Hits me with his knife, and pops his hero power again. I kill the murlock with one of the Cultists, heal it with my hero power, play the Unstable Ghoul again, and hit him with the other Cultist (he is down to 21 health). He plays Loatheb.
I play a Auchenai Soulpriest, use my hero power to do 2 damage to Loatheb, kill Loatheb with one of the Cultists (both dying, with it giving the other Cultist the +3 health), and attack him for 3 damage with the Cultist (he is down to 18 health). He plays a backstab on the Soulpriest, the combo do 4 damage on the soulpriest to kill it, a betrayal on the Cultist (killing the Ghoul, which does 1 damage to the Cultist), a Pint-Sized Summoner (2/2), and attacks the Cultist with his knife (don't know why, down to 15 health).
I then play another Northshire Cleric, play the do 2 damage/heal 2 AoE (killing the Pint-Sized Summoner, and healing my Cultist to full health, healing my priest back to full health + giving me a card), and play inner strength on the Cultist, turning it into a 7/7, and smack him down to 6 health (due to 2 damage from the AoE plus the 7 from the attack). He finally pops the miracle starting 4/4+draw card on spell (and I am guessing is hoping for a miracle low mana taunt or a big game hunter), and plays a backstab on the Cultist, then a Bloodmage Thalnos, then the return card costs 2 less, then the Bloodmage Thalnos again, then a preparation, then kills himself (never getting that low cost taunt or big game hunter he needed).
I also started saving up my gold in anticipation of the new card decks. I think I am up to over 400 gold now.