Hearthpwn

Keep it on the anti-aggro side of things. Keep Barnes and Shadow Word: Pain always: this one will be aimed at the Jade Behemoth and Fandral Staghelm, as well as to any type of aggro clutch card, if that's the case. Don't waste those.

Eternal Servitude with Barnes

Shadow Essence if you have The Coin.

Keep Shadow Word: Horror as this is great both vs Aggro and Jade druid.

Keep Silence but only if you know he is an aggro and you have one of the above anti-aggro answers, as Silence can be crucial in a lot of spots in this meta.

VS AGGRO - You just want to constantly clean his board and simply make him run out of gas. Taking some extra damage to set up a following turn of Pint-Size Potion And Shadow Word: Horror has won me pretty much the game on the spot. You also have Dragonfire Potion. It's a usual Aggro vs Control scenario, not much that can be said here. You have the answers, you win. He overruns you, you lose.

VS JADE - Druid has a hard time removing big minions, which is kinda what we do here. Keep in mind all of the removals that he's used and just work on developing a board of 3 big minions, as there are a lot of Mind Control Tech running around. Once you achieved this goal, the game is pretty much done. If his Jades reach critial stages, remember that you have a lot of layers of removal that should be used accordingly. Dragonfire Potion should be used on until the 5/5 Jade mark, Shadowreaper Anduin going forward, and so on and so forth. Keep track of your plans of removing his Jade waves, as you legit have distinct removal waves that work for all of his waves as well.

VS BIG DRUID - This is slightly different than the gameplan you have vs Jade, as in this match, you essentially turn into an old style Control Warrior. He has a certain number of fixed minions, which you already know of, so does he about you. The point is, you have way more big minions and way more ways of generating them and most importantly, way more ways of removing them. Try to get Shadow Word: Death out of your Shadow Visions to have more and more answers, Silence his Deathwing, Dragonlord to avoid a massive butchering and use your Shadowreaper Anduin wisely. Big druid is the easiest of all the matchups, as I believe this deck has never lost to it.

Barnes, Silence, Shadow Word: Pain to be used on his clutch totems, Shadow Word: Horror to clean him before he evolves.

Keep Pint-Size Potion if you also have Shadow Word: Horror

Make sure to sistematically clear his board. Keep Dragonfire Potion for his big evolve waves, develop some sort of board yourself and win the game. I am currently around 12-0 vs Shaman, so there really is not much to be said here. If you lose, it means you simply used your AOE removals at the wrong time. Taking some face damage to set up a huge board clear next turn can be often the best move. Keep track of his mana and his Bloodlust to avoid getting oneshot. The rest is smooth as a Ken doll.

Barnes, Silence, Shadow Word: Pain,Shadow Word: Horror. The usual anti-aggro kit.

Keep Pint-Size Potion if you also have Shadow Word: Horror

Spirit Lash for his most common turn 1 start.

Usual anti-Aggro strategy, not much to be added on this side.

Keep your Shadow Word: Pain for his Southsea Captain, unless otherwise necessary. Silence for his Edwin VanCleef or Shaku, the Collector in case you can't clear him with your Shadow Word: Horror. Also beware of the new Cairne Bloodhoof versions.

Shadowreaper Anduin is the star of this matchup. Dropping him on curve to counter his Bonemare swing gives you a lot of insta-concedes right there.

Pint-Size Potion into Shadow Word: Horror is a devastating combo to him, as it also clears what a Dragonfire Potion often cannot (Dragons).

Dropping a huge minion with Shadow Essence or Barnes will also generally turn the board in your favour, as he will start thinning his hand using a lot of removals. Keep track of his Vilespine Slayer and Shadowstep, as this is pretty much his only way to fight the board once the big minions roll in.

Sidenote on Barnes. Never drop him on a non-empty board if you don't have any followup to him. Your goal for this matchup is to control and only start developing once there is a clear or weak board. Going The Coin into Barnes with no followup can often times instantly lose you the game, as it will in pretty much all matchups.

Another huge sidenote is that Rogue generates a lot of random cards in the process. Always keep track of those, as this is the most frustrating part of the matchup. I have lost to some pretty absurd outcomes, so always be prepared for the worst.

Barnes, Eternal Servitude if Barnes, Shadow Essence always, even 2 copies of it, Silence.

The goal of our mulligan is to go full greed, differently from what we do vs Aggro.

The early gameplan is two-fold. On our side, we want to start rolling big minions and making them stick. On his side, we want to use our removals for his drawing mechanisms, to prevent him from picking his combo pieces any faster than he normally would. Don't worry about using removals, as his board is often weak, generally his biggest minion is Raza the Chained.

Once we start having minions down, keep track of his removals and keep your board as much varied as possible. Careful to not have a board of only 4 attack minions, as he also runs Pint-Size Potion into Shadow Word: Horror. On the same note, don't flood the board with 5+ attack minions until he has used his Shadowreaper Anduin.  Once he runs out of Shadow Word: Death and has used Shadowreaper Anduin, flooding the board with The Lich King and other big minions will guarantee us the win.

There's a very long list of sidenotes, tho.

First of all, careful with Barnes. Priests run Potion of Madness, which means that he can steal our 1/1 minion, kill it and preclude us from summoning it with Eternal Servitude. Hence why going The Coin - Barnes on 3 and Eternal Servitude on 4 will often turn into a disaster. The most reliable combo is Barnes on 4 into The Coin and Shadow Essence on 5. Also, and this is where Silence really shines, pulling a 1/1 and using Silence on it will make sure Priest cannot Potion of Madness it. Obviously, if it's a 1/1 Y'Shaarj, Rage Unbound, keep it, as even if he steals and kills it, we still have a huge body down he can't do much about.

Second important note is that Raza Priest has like 100 different variations. Their decklist is pretty much always different, which makes any type of planning difficult. Play always solid and don't take any chances, aside from the usual RNG parts of our deck archetype.

Another important note is Lyra the Sunshard. Keep track of the amount of cards he pulls and always keep in hand something to deal with it, wether it's Shadow Word: Pain or Silence. You can't do much about him generating cards, but if this card stays on board more than the initial turn, you will pretty much play without having any clue of his hand from that point on.

Minion management is crucial. You want to always be able to generate threats on the board. Once he can't deal with them, you will pretty much know what he is missing and press where it hurts.

Last important note is to keep your life total high. He can OTK us with Prophet Velen into Mind Blast into Holy Smite into Circle of Healing into Silence. Allowing such a combo in a deck that has the best removals in the game, deck cycling and a brokeback 0 cost board impacting hero power is simply an aberration for a card game, but my salt aside, you need to be aware of this combo.

Barnes, Eternal Servitude if Barnes, Shadow Essence with The Coin.

Shadow Word: Pain or Silence, as it's always nice to have at least one early game removal.

If you know he is an Exodia Mage, go with the Priest mulligan, as you MUST go greedy to have a chance.

VS EXODIA - It's a run against the clock. Try to summon big minions, go face, pop his Ice Block, win. If he completes the quest, you are donzo. The only tip I can suggest is using Silence to deal some surprise hits and to always silence the 1/1 that comes out of Barnes. We are unfavoured here, so make the best of it. You will end up overdrawing, as your Ysera and The Lich King will keep summoning since he can't remove them, just try to use those trump cards to pop his Ice Block, Death Grip his clutch pieces, Dream to make him overdraw, Nightmare to surprise pop him and so on. It's a clown fiesta matchup, as some of our actual win conditions are RNG based.

VS THE REST - This includes Quest Giants, Control, Fatigue, Elemental and whatnot. We are heavily favoured in all of these matchups as they are slow enough to allow us to develop, have limited removals and pretty much die to our board eventually. This is a Control matchup in which we need to keep constantly baiting their answers until they run out. Keep track of their Meteor-like removal cards and just slowly build an unkillable board. Eventually they will run out of answers, while we have 5 big minions to be removed + 6 other forms of copying them + 2 additional ones if needed. Use Shadow Visions to dupe minion generating cards, unless otherwise needed to survive. If you see that the match is taking too long, you will eventually win the fatigue matchup.

Special side-note goes to the Secret matchup. In this one, keep Silence in the mulligan phase to bait his clutch secret turns and avoid losing precious turns. Always keep your life total high, control the board, use Shadowreaper Anduin for his Bonemare turn swing and you will be golden.

Vs Control we have more than enough time to develop, so make sure to keep the mulligan on the anti-Aggro side.

Keep Barnes and Shadow Word: Pain always.

Eternal Servitude with Barnes.

Shadow Essence if you have The Coin.

Shadow Word: Horror is a pretty strong auto-win vs Aggro.

Pint-Size Potion if you have Shadow Word: Horror.

Keep Silence but only if you know he is an aggro and you have one of the above anti-aggro answers.

VS AGGRO - Usual Control vs Aggro matchup. Use Silence and Shadow Word: Pain against his clutch cards, set up a huge Pint-Size Potion + Shadow Word: Horror. If he has The Coin and has opened Turn 1 with Malchezaar's Imp, immediatly remove it with Shadow Word: Pain, as he can Bloodfury Potion is the next turn, which is a flat lose right there. If you stabilize and survive the early to midgame, keep an aoe clear for his Bloodreaver Gul'dan and it's pretty much gg. Keep track of his Soulfire and charge potential minions and keep your life total accordingly. Sometimes it's better to pop a Greater Healing Potion and be safe rather than generating a big minion and get smORCed.

VS CONTROL - Play it out the same as you were vs a Mage. Keep track of his Siphon Soul, Twisting Nether and big minions and the match is pretty straight forward from there. Don't overflood the board and run out of bullets until he has used both Twisting Nether. Other than that, slowly pose threats, slowly bait out removals, make him run out, win the game. Very easy matchup.