Blizzard's online card game, hearthstone, has come out with a brand new solo adventure for players to test his/her strength against a variety of bosses.

The newest journey, Blackrock Mountain, features 5 different wings with 3-4 bosses each. Each boss can be beaten on normal or heroic mode, with card rewards, class challenges, and more. 

Here we explore the second wing of the series, Molten Core, as we explore the next 3 bosses and the best classes, cards, and strategies to beat them. 


Garr is a fire elemental boss that abuses his AOE (Area of Effect) damage to kill off any of your weak minions and subsequently his own. However, when his minions go down, so does your health. 

Health: 30

Health (Heroic): 45

Hero Power -  Magma Pulse - Deal 1 damage to all minions. (1 mana)

Special Cards


General Strategy

This boss works the strategy of placing as many Firesworn on the board as possible, and killing them off to do damage directly to your health. Because he can only use his hero power once a turn, and each Firesworn has 5 health, it's going to take him at least 5 turns to start executing his plan. 

Since you know he's going to be spamming 1 damage to all minions, using a deck with plenty of enrage minions is the perfect counter to his play. You'll be constantly getting stronger without having to do anything, while he waits around to kill off his minions. 

Recommended Class

Warrior - Since Warrior decks are infamous for centralizing around enrage minions, this is the perfect opportunity to capitalize on the cheese combination of Warbot, Armorsmith, Seige Engine and Frothing Berserker. You'll be constantly taking damage, and thus gaining armor and attack power. 

Pairing these with some enrage-heavy neutral monsters such as Amani Berserker, Gurubashi Berserker, Tauren Warrior, and Raging Worgen and he'll be beefing up your minions the entire time-- essentially doing all the hard work for you! 

*Sneak an Acolyte of Pain in there too for the extra draw power. 


Baron Geddon 

Baron Geddon is the second boss in the Molten Core wing of Blackrock Mountain, and is designed to punish players who don't use every mana crystal wisely each turn. 

Health: 30

Health (Heroic): 50

Hero Power - Ignite Mana - Deal 5 damage to the enemy hero if they have any unspent mana. (0 mana)

Hero Power (Heroic)  - Ignite Mana - Deal 10 damage to the enemy hero if they have any unspent mana. (0 mana)

Special Cards


General Strategy

Baron Geddon is making sure you're using your mana! Because of this bosses hero power, there's no room to afford having any leftover mana at the end of your turn.

Paired with his special cards, an aggro deck with many low cost minions and spells is the perfect way to defeat this boss.

Recommended Class

Mage - The Mage's abundance of varying cost spells makes it a great way to combat Baron's hero power. Grab Arcane Missiles, Frostbolt, Polymorph, etc. to ensure board control. Arcane Intellect will also come in handy because of all the cards you'll be playing to avoid his Hero power. 

Neutral, low-cost minions work well in this situation because of his Living Bomb card. The key to avoiding this power is to make sure each one of your minions is easily killed off and disposable, such as Eleven Archers, Stonetusk Boars, Bluegill Warriors, etc. These low-cost minions will also pose as gap-fillers for turns when you need to use all your mana. 


Ragnaros the Firelord 

Ragnaros the Firelord is the final boss of the Molten Core wing along with Majordomo Executus.

The first stage is against Majordomo and upon beating his 30 health, you'll be faced with Ragnaros for Stage 2.

Health - 8

Health (Heroic) - 30

Hero Power Stage 1 - The Majordomo - Summon a 1/3 Flamewalker Acolyte. (2 Mana)

Hero Power Stage 1 (Heroic) - The Majordomo - Summon a 3/3 Flamewalker Acolyte. (2 Mana)

Hero Power Stage 2 - DIE, INSECT! - Deal 8 damage to a random enemy. (2 Mana)

Hero Power Stage 2 (Heroic) - DIE, INSECTS! - Deal 8 damage to a random enemy. TWICE. (2 Mana)

Special Cards

Stage 1


Stage 2

General Strategy

While Majordomo in Stage 1 uses a very big minions including Flame Imps, Core Hounds, and a lot of Molten Giants. Once you defeat him, he is replaced with Ragnaros who has a lot of serious kill potential in Stage 2.

However, when Ragnaros appears, you'll still have all your minions on the board so bursting him down before he has a chance to use his Hero Power and minions is the perfect strategy. 

Recommended Classes

Mage - A Mage deck has freezes and Polymorph to take care of the bigger minions while you burn down the bosses. Just play control and keep whacking at his health in Stage 1, while using spells to counter his minions, and when he turns into Ragnaros in Stage 2 swing for the last 8 damage. 

In Heroic mode, Ragnaros will have 30 health, so good board control and a flood of big creatures is a necessity to have prior to Ragnaros appearing. 

Shaman - A Shaman deck is also the perfect counter as it has a lot of big removal spells for the creatures in Stage 1 such as Lava Burst and Lighting Storm. The totems your hero power summons are also great targets for his removal spells, as he won't necessarily target any particular minion. 

The larger creatures Shaman has such as Fire Elemental should be used and buffed so that when Ragnaros comes for Stage 2, you can just attack directly and win before he gets a chance to use his abilities.


Wing Completion

Completing the entire wing will grant you the legendary card, Majordomo Executus:

Head back to our Blackrock Mountain Landing Page for other guides. 

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