I've had this deck for a while, but I was too lazy to create an account and share it here. Until now. So here I am, enjoy !

This is the deck I used to grind ladder with. I haven't played it a lot since ONIK, but it used to do fairly well against Shamans. I finished second place in the Reddit HS Grand Tournament thanks to mainly this deck.

What's special about this deck?

At first glance, this looks like a mediocre Renolock. Without Leeroy or Malygos, the burst potential drops significantly. But that's the point: the win condition of the deck isn't to win through a 15+ damage combo.

Instead, the win condition is to make it into the lategame after exhausting the enemy threats and burst. Once you reach a stable position (or if it's necessary to heal a bit / fatigue gets close), you drop JARAXXUS, EREDAR LORD OF THE BURNING LEGION, which should bring victory pretty fast.

How good is Jaraxxus as win condition?

It's a risky play against burst-based decks (malygos druid, anyfin paladin and mage, mostly), but against most decks if you drop it while you have board control, you pretty much win.

In the current meta, you would think Harrison and Ooze can ruin your day, but Jaraxxus is played so much that most of the time they will play Harrison and Ooze for tempo, leaving your weapon safe.

Four cards enhance Jaraxxus in that decklist.

Thaurissan is there only to reduce the cost of our Jaraxxus to 8, allowing to drop an Inferno immediatly. If you have the coin, you can afford to play him as a body, but Jaraxxus isn't nearly as powerful without the immediate Inferno.



Captain Greenskin. Yes. Getting an upgrade on a 3/8 weapon is a massive boost. You can now kill Totem Golems, Azure Drakes and whatever is on your way, in one hit !



Brann, though it can do work with Argus and Twilight Drake, is mainly here to enhance... Greenskin. If a 4/9 weapon wasn't enough pressure, maybe a 5/10 can do the trick against Control Warrior.



Garrison Commander is probably one of the MVP to seal the game. One of the weaknesses of Jaraxxus is how slow it is to build a board (a 6/6 a turn only matters really after ~2-3 turns). Now, what if your turn was Garrison Commander, DOUBLE Inferno, and an Argus in between both? That's what I call building a board !

You will also find two other synergies:

Reno Jackson + Youthful Brewmaster. Against burn based decks, or if you need time to find a board clear, this is perfect. Seeing Reno and knowing you still have it ready, some decks will simply concede if they aren't in a strong position.

Sylvanas + Shadowflame/Power Overwhelming. A classic in control warlock decks, not surprising to find it here.

Unusual inclusions

Sen'Jin Shieldmasta. You don't see this guy a lot anymore, but I've always liked the card. It's a solid taunt for the early/mid game, and does its job fairly well.

Sunwalker. It isn't insane, but it's fine. It forces either a premium removal (like Hex), or a ping + damage. Either way, it's usually annoying enough to remove that following threats are quite safe.

The Black Knight. Many classes don't run Taunts, so you might think it's a bit odd of a choice. However, Shamans are really popular and you often have a taunt to get rid off. Against Paladins, it fits perfectly with an Ooze to deal with Tirion on curve. At worst, it's a 4/5 body which is big enough and can be used with Shadowflame on turn 10+.

Matchups

Against decks like Malygos Druid, Miracle Rogue or Mage (basically, anything that may burn you from hand), try to play as safe as possible until their hand is empty. Force their burn spells on your minions and keep track of what may kill you, and you're good.

Against Anyfin Paladin, try to Jaraxxus as soon as possible and save your Argus and Sunfury. If you put down a big wall of taunt, they have to deal with it, meaning they can't use Anyfin.

Against aggro/tempo decks, use your "combo" pieces (Brann, Greenskin) as tempo pieces if you're falling behind and have no clear. A turn gained is very valuable.

Against Control decks, try to hold to Jaraxxus, but once you have your Thaurissan tick play it as soon as the board is clear. If you don't draw Thaurissan and you have few cards left, use Jaraxxus even without the Infernal.

Bonus