Hello guys. I am part of the Dutch Hearthstone team LowLandLions. I just hit Rank #1 on eu playing with priest all the way! It works really good right now because the majority of ladder consists of hunters. And this deck has at least a 90% win rate against them.
You can find my stream at: Twitch.tv/tylerootd
I will write a more in depth guide once this deck gets more views.
Easy matchups: Hunter,Tempo mage, Zoo, Shaman,
Decent matchups: Paladin, Rogue, Druid
Hard matchups: Handlock, Control warrior, patron warrior
Against druid and warlock it's fine to keep shadow word death too. And against warrior it's fine to keepThoughtsteal because the first few turns are really slow anyway. Harrison Jonesis ALWAYS a keep against all weapon classes.