Hearthpwn

The Corrupted Nest looks fun but not sure if Bearmantle's HP will make this fight too easy due to essentilly countering the boss one, I guess I'll have to wait to see both characters decks in order to find out. About the cards, I find Dark Eggs too polarising and RNG-dependant and while Cleanser is cool I'm not sure if demon tech is needed in your expansion. Still a good card, near vanilla statline  silence. Dragons of Nightmares is good, nothing to say. Same about Phantom Menace, balance seems okay and it's a good removal. I like Nythendra and it must be fun to wreck it with an Enrage Warrior :P. About the cards, not sure why Onyxian Claws is rogue, it's always cool to have healadin support like champion of the dusk. About Ysera, you should make her deck full of expensive dragons because the HP only pays off if it's 4 mana or more. Verdant Drake is a good idea, I like your cards that give Dream cards. Ysera, on the other hand... It wrecks Zoo because if they have a full board they are screwed, and the card just costs 4. Honestly the effect is original but I don't like it, it could break the game by giving your opponent useless minions. And if you use her you'll most likely be prepared by the effect with Silence and such, while your opponent not.

Podling Seedspreader is good, the effect pays off with just one Treant so the statline is justified. I prefer the second broken mystic just like @McF4rtson due to the first one being useless if hero is at full health (so near always useless if played on curve). Change the statline though, too low. Both infiltrator dagger and unbrafen soulharvester are good and original, plus I love 1/3 1 cost minions (yes, I've entered hearthstone after the Tunnel Trogg nightmare, so I don't have PTSD from them). Funnily enough, while you said in the last wing that you were going to make an Ogre magi with a Spell Damage based HP, I was thinking about making an Elemental with a similar effect as your Oger Archmagi's effect. Maybe I'll still do it, I'll see. The minion is good, a better version of Ogre Magi (though I guess that's intended), but old magi was tash anyway so it shouldn't matter. Boss HP is like Kalec's one but written different, maybe you want check that out or just leave it with your own writing. Ashtongue Spy is cool and Akama interesting to destroy small minions.

Mr. Smite, the old captain Greenskin's first mate, hasn't taken well being completely removed from World of Warcraft! His deck will feature lots of weapons obviously, but I'll try to take a different approach than Pirates. Maybe enrage? After defeating him, you'll obtain Angrath two taurens from his tripulation, to boost even more your pirate decks!

Decklist

Minions (12):

• Eternium Rover x2
• Goblin Gunner x2
• Acolyte of Pain x2
• Bomb Wrangler x2
• Firehoof Bucaneer x2
• Frothing Berserker x2

Spells (6):

• Whirlwind x2
• Battle Rage x2
• Warpath x2

Weapons (12):

• Death's Bite x2
• Arcanite Reaper x2
• Smite's Mighty Hammer x4
• Sul'thraze x2
• Gorehowl x2

Card Reward:

Cookie, the Defia's chief, doesn't take lightly the task of protecting Edwin's treasure. With his Mill deck and Hero Power, he'll try to defeat you doing what he does best: filling you up! His defeat will give you some of the most evasive murlocs, to help you swarm your opponents.

Decklist

Minions (23):

• King Murkla x2
• Chromatic Dragonkin x2
• Stonesplinter Trogg x2
• Coldlight Oracle x2
• Gluttonous Trogg x2
• Slipfin Rascal x2
• Dancing Swords x2
• Daring Reporter x2
• Forest Guide x2
• Griftah x1
• Hoarding Dragon x2
• Giantfin x1
• Trade Prince Gallywix x1

Spells (7):

• Naturalize x2
• Never Surrender! x2
• Research Project x2
• Divine Favor x1

Card Reward:

I was thinking about the best bosses of Galakrond Awakening, and Khadgar vs. Avalanchan came to my mind. I love to replay that battle from time to time just to see in how many turns I can defeat the boss and which overpowered combo I can make. So, I wanted to make Vanessa similar. That's why she'll have a deck focused in customizing your hero power. The following cards are the ones her deck will be formed with:

 Hero Power explanation

You'll start with a useless hero power. When you play one of the above cards (except starting again, of course) you'll add an Enchantment to your hero power. Targetting your hero power will let you use the enchanted effects. However, there's a limit of 3 enchantments. If 4rth enchantment is added, you'll lose the oldest one (the first). Enchantments can stack, including Hakkar's cost, and if one Hakkar's blood leaves your Hp cost will reduce.

Vanessa is tasked with retrieving the treasure while the others get their loot from the last boss fight, but she gets surprised by an apparition of nothing less than her father! Of course she won't like to fight him, but while being under Greenskin's service she doesn't has any other chance... VanCleef will have a combo deck with cheap cards to support his images while Vanessa will have a deck stuffed with cards to concoct her poison. After Edwin vanishes, you'll obtain a ghastly reard and, at last, the treasure! Or so it seems...

Edwin's Decklist

Minions (16):

• Cutpurse x2
• EVIL Miscreant x2
• Gilded Gargoyle x2
• SI:7 Agent x2
• Dirty Cheater x2
• Elven Minstrel x2
• Tomb Pillager x2
• Burgly Bully x2

Spells (12):

• Backstab x2
• Whispers of EVIL x2
• Sinister Deal x2
• Eviscerate x2
• Resourceful Looting x2
• Soul of the Plunder x2

Weapons (2):

• Livewire Lance x2

Vanessa's Decklist

Spells (30):

• Juggernaut Oil x5
• Eau of Kragg x6
• Essence of Oblivion x6
• Extract of Sulfuras x5
• Starting Again x2
• Faceless Passion x5
• Hakkar's Blood x1

Card Rewards (Class Challenge: Rogue):

Initial Dialogue:

Decklist

Minions (30):

• Elven Archer x2
• Goldshire Footman x2
• Murloc Raider x2
• Stonetusk Boar x2
• Voodoo Doctor x2
• Acidic Swamp Ooze x2
• Frostwolf Grunt x2
• Murloc Tidehunter x2
• Nat Pagle x1
• Novice Engineer x2
• River Crocolisk x2
• Ironfur Grizzly x2
• Raid Leader x2
• Silverback Patriarch x2
• Wolfrider x2
• Azshara the Corruptor x1

  Just when you thought, you'll bath in riches, the Ashvane company enters the scene! Priscilla is trying to steal what's yours (well, it's yours from five minutes ago). Expect Stonetusk Boars (Yeah, it's one meme battle) and the likes from her deck. But, at turn 5...

Boss Behaviour

At turn 5 (or when you defeat her), she'll play the following card (she has it from the start of the game, but is unremovable):

More Dialogue:

 Azshara will appear and transform Ashvane into a hideous beast, changing her Hero Power, restoring all her life and replacing her deck:

Of course, if you manage to steal Azshara, you can also transform yourself!

Corrupted Decklist

Minions (22):

• Bilefin Tidehunter x2
• Claw of Go'rath x2
• Nat, the Darkfisher x1
• Faceless Rager x2
• Cult Apothecary x2
• Faceless Shambler x2
• Infested Wolf x2
• Doppelgangster x2
• Faceless Corruptor x2
• Faceless Summoner x2
• Slithering Guard x2
• Herald Volazj x1

Spells (7):

• Looming Presence x2
• Conjurer's Calling x4
• Power Word: Tentacles x1

Weapons (1):

• Tentacles for Arms x1

Defeating Ashvane will grant you access to her forces. But, don't think everything ended! During the battle Azshara stealed the treasure to lure you into her realm, the Eternal Palace!

Ending Dialogue:

 Card Rewards (Class Challenge: Paladin):

Decklist

Minions (12):

• Spellbook Binder x2
• Ogre Magi x2
• Boulderfist Ogre x2
• Mogor the Ogre x1
• Cho'gall x1
• Flame Ogre x2
• Twin Tyrant x2

Spells (18):

• Double Trouble! x2
• Ray of Frost x2
• Flame Geyser x2
• Cryostasis x2
• Unexpected Results x2
• Cone of Cold x2
• Fireball x2
• Blizzard x2
• Pyroblast x2

Reward:

Your first obstacle after entering the caves is Glubtok, a fearsome magi ogre capable of dominate both fire and ice!

Heroic Hero Power:

Boss special behaviour

After he has 15 Health or less, he'll lose his Shredder and change his Hero Power:

Tokens:

Decklist

Minions (16):

• Surprise Barrel x2
• Acornbearer x2
• Mecharoo x2
• Incubator x2
• Motherbomb x2
• SN1P-SN4P x1
• Super Soldier x2
• Piloted Shredder x2
• Kaboom Module x2
• Piloted Sky Golem x2
• Gonk, the Raptor x1

Spells (8):

• Resourceful Logging x2
• Bomb Toss x2
• Soul of the Forest x2
• The Forest's Aid x2

Weapons (2):

• Sul'thraze x2

Rewards(Class Challenge: Druid):

Second on the list, Sneed, with his fearsome Goblin Shredders! As a Goblin Lumberjack, he has access to powerful Shredder, and can use the fallen trees as Treants.

Heroic Hero Powers:

Boss special Behaviour

Always starts with Nightmare Elixir in mulligan, and never with Captain Cookie so it can be drawed. Vanessa will activate her Hero Power as soon as she can unless she has lethal.

Tokens:

Decklist

Minions (23):

• Bladed Cultist x2
• Bloodsail Flybooter x2
• Captain Cookie x1
• N'Zoth's First Mate x2
• Sky Raider x2
• Southsea Deckhand x2
• Defias Raider x2
• Defias Ringleader x2
• Parachute Brigand x2
• EVIL Miscreant x2
• SI:7 Agent x2
• Southsea Captain x2

Spells (3):

• Eviscerate x2
• Nightmare Elixir x1

Weapons (4):

• Hooked Scimitar x2
• Perdition's Blade x2

Heroic Hero Power:

Rewards:

Finally, here's Vanessa! She'll try one last desesperate attempt to take you and Greenskin!