Hearthpwn

And again, and again, and again, and again. He never really leaves to be honest.

By utilizing a Big Priest shell, Zerek, Master Cloner is able to show how much he cares about you by never leaving your side.

How to Play

For those of you who normally play Wild, you are probably already familiar with Big Priest. For those who aren't, try your best to get to turn 6 through utilizing removal such as the Shadow Words and Spirit Lash. Once you get to turn 6, play Shadow Essence or Zerek, Master Cloner (doesn't really matter if he dies, you can always get him back later). Afterwards, use all the revive effects to bring back Zerek or Obsidian Statue and just overwhelm the opponent with either a swarm of 5/5s or 4/8 lifesteal taunts. If your swarm of undying 5/5s aren't able to finish off your opponent, Shadowreaper Anduin is there to help not only clean up the board but then also provide the last bit of damage with the help of all the cheap buffs.

Don't worry about throwing away buffs on Obsidian Statue or your Free From Amber minion because there is probably too much buffs and I should find a way to reduce that and get better early game.

Match ups

As you can probably tell, this deck struggles against aggressive decks, not really a surprise. That being said, this deck has a real easy time pulling wins out of it's ass after turn 6-7 so any slow deck is often an easy match up as they just can't deal with endless storm of Zereks and Obsidian Statue.

Mulligan Guide

Since I still don't really know what the defining archetypes for each deck is (and I don't think they are all decided yet, still day 2 of the expansion) so I'll just say what you want to mulligan for depending on the match up.

For aggro decks, try to find Shadow Word: Pain and Spirit Lash. These two cards are easily the safest ticket out of the early game.

For combo and control decks, pretty much hard mulligan for Zerek, Master Cloner or Shadow Essence. Shadow Visions are fine too since it lets you try finding said Shadow Essence.

Substitutes

Shadowreaper Anduin is mostly just icing on an already late game powerhouse. If you don't have him and don't want to make him, he can just be replaced by more removal such as Shadow Word: Death. If silence becomes a big thing (which I still don't think it will), Mass Dispel could also be a good replacement. Finally, if you want to be real greedy, Extra Arms is also pretty decent at being able to help keep Zerek alive for longer.

Vivid Nightmare is absurdly good in the deck, but it's still replaceable. Another copy of Extra Arms is good and Divine Spirit is also pretty decent. 

Obsidian Statue is a card that is incredibly important just because it's strong in so many match ups, but if you don't have it, The Lich King, Deranged Doctor both do a decent job, albeit not as good of a job.

Psychic Scream is pretty good for securing wins against aggro, but originally I had a second copy of Power Word Shield. This does not do the same job whatsoever, but there isn't really another card that does what the scream does.

Shadow Visions and Zerek, Master Cloner are the only two non-common and rare cards you actually need for the deck. Shadow Visions simply provides way too much consistency for the deck that is very much needed and Zerek, Master Cloner is literally the reason why this deck exists, so no cuts for either of them, sorry.

Final Verdict

Here's where I normally say how good a deck is and how I feel it compares against most the meta. However, the meta hasn't really stabilized yet so I'll just talk about how it feels at the current rank I'm at (played it from 15-9 so far). The deck punishes the daylights out of control decks. To the point where I don't think I've actually lost a match to a control deck. As for combo decks, it typically depends on how fast they are able to pop off. Unfortunately, there is no way for priest to really interact with these types of decks. The one way we can interact is by getting Nozdormu off of Free From Amber, which is not a reliable way to win at all. I've still beaten combo decks by just rushing them down (and the aforementioned Nozdormu play), but it feels like a mixed matchup. Aggro match ups are easily the worst but atleast for me, I haven't been seeing that many aggressive ones. Odd Paladins are not that bad if you can get Spirit Lash but Odd rogues are literally the worst thing for the deck. This deck just flat out cannot beat a turn 3 Hench-Clan Thug because it becomes a 4/4 immediately, then by the first time we can properly deal with it, it has already dealt too much damage. That being said though, I still think this deck is pretty decent. I've mostly gone against slower decks and this deck excels at beating those. Not only that, but nobody knows how to deal with Zerek, Master Cloner and I find that hysterical. Overall, I'd recommend this deck in a heartbeat. It is without a doubt the most fun I've had in this game for ages. With all the zoo and other aggressive decks running amok, this deck hasn't really been doing that well unfortunately, so as of right now I'm working on making a deck that still utilizes Zerek to the extremes, but is more board focused.

So I made a list that is more focused on the board and is a midrange deck, here's a link to it.

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I just want to thank everyone for all the attention this deck has received. Going to be honest, I thought this deck was just going to end up like my mill druid from Witchwood, not being ignored but never really taken off either. This deck blew that out of the water, reaching the front pages of not only the priest decks (which at the moment it's at the top of that) but then also making it on the front page for a bit (like 3 hours or so until it fell off, but still). It means a lot to me knowing that people would spend the time to try out a deck I made. Thanks for all the support!