Proof of legend:
Proof of winstreak:
(Excuse me for my bad English, I'm Dutch)
The wild meta contains more c****r than Forsens twitch chat, so I decided to use this deck to climb from rank 3 to Legend this season. It is really effective against Pirate Warrior, Aggro Druid and Aggro Shaman. Against Priest and Paladin you also have a favorable matchup (Though I didn't face many of them after hitting rank 3). The only bad matchup is Secret/Control Mage.
Note that I started using a deck tracker when I hit rank 3, so that's why no results of lower ranks are shown. From rank 5 to rank 3 I used a Control Paladin deck to climb (maybe I'll post that list later).
How to use this deck
The goal of the deck is to control the board and heal to stay alive. When the opponent runs out of steam, you can use N'Zoth or Lord Jaraxxus to fill your board and kill the opponent in 2-3 turns. Against aggro you'll win by clearing their board and using taunts in the early game, followed by healing in the late game to let them concede. Against control you'll want to use your hero power in the early game as much as possible, followed by Emperor Thaurissan to get some nice, cheap card combo's (Lord Jaraxxus + hero power; Brann Bronzebeard + kazakus). Your win condition will be Lord Jaraxxus in most cases.
Warrior (Pirates)/Rogue (Quest/Aggro)
Mistress of Mixtures, Acidic Swamp Ooze, Doomsayer, Golakka Crawler, Imp Gang Boss, Deathlord, Tar Creeper, Hellfire, Reno Jackson.
Mistress of Mixtures, Acidic Swamp ooze, Imp Gang Boss, Piloted Shredder, Twilight Drake, Emperor Thaurissan, Reno Jackson.
Shaman/Paladin (Secret)/Hunter/Mage (Tempo)
Mistress of Mixtures, Darkbomb, Doomsayer, Imp Gang Boss, Shadow Bolt, Deathlord, Tar Creeper, Hellfire, Reno Jackson.
Mistress of Mixtures, Darkbomb, Doomsayer, Golakka Crawler, Demonwrath, Imp Gang Boss, Deathlord, Tar Creeper, Hellfire, Shadowflame, Reno Jackson.
Mistress of Mixtures, Imp Gang Boss, Tar Creeper, Piloted Shredder, Twilight Drake, Emperor Thaurissan.
Priest/Warlock/Paladin (Control)/Rogue (Control)
Piloted Shredder, Twilight Drake, Emperor Thaurissan, Lord Jaraxxus.
Blastcrystal Potion - You cant afford losing 1 mana against aggro decks, but it's a great card against control decks.
Dr. Boom - It's a good card, but it's too slow in this meta. You don't want Boom Bots from N'zoth.
Mountain Giant - Against control decks it's definitely worth it using this card, but against aggro it's useless.
If you face a lot of Aggro:
Loatheb -> Infested tauren
Emperor Thaurissan -> Sunfury Protector
If you face a lot of Control:
Loatheb -> Blastcrystal Potion
Refreshment Vendor -> Mountain Giant
If you face a lot of Secret decks
Golakka Crawler -> Destroyer of Secrets
Sludge Belcher -> Infested tauren
Sylvanas Windrunner -> Cairne Bloodhoof/Piloted Sky Golem
Loatheb -> Mountain Giant/Kabal Courier
Antique Healbot -> Cult Apothecary (I personally won't do this actually)
Proof of legend: