Molten Core Guide
Last updated: 7/21/26
Molten Core in Season of Discovery is a weekly lockout (resets Tuesday). It’s tuned for 20 players, but accepts up to 40 players. Loot does not change based on player count, which means the more players you bring, the easier it is to kill each boss, but the less loot each player will receive on average.
In order to fight bosses 9 and 10 (Majordomo and Ragnaros), your raid must possess at least 7 douses, one for each boss besides Lucifron. In order to obtain douses, you must have obtained Honored reputation with the Hydraxian Waterlords faction and must have completed the quest chain beginning with Poisoned Water and Stormers and Rumblers, and culminating with Hands of the Enemy. Once this is done, you may ask Duke Hydraxis for a consumable douse. At Revered reputation, you can also ask him for a second, reusable douse (with a 1 hour CD), giving your character a total of two douses.
In SoD, MC has three difficulty levels you can switch between - Heat Level 1, 2, and 3. You can change the current Heat Level at will by talking to the NPC at the start of the instance.
- Bosses have (mostly) their same vanilla mechanics.
- There is no Fire Resist requirement.
- Each boss drops 3 pieces of loot on average.
- Bosses have small changes to their mechanics.
- There is a 96+ Fire Resist requirement.
- Each boss drops 4 pieces of loot on average.
- Bosses have more punishing changes to their mechanics.
- There is a 226+ Fire Resist requirement.
- Each boss drops 5 pieces of loot on average.
- Weapons that drop will have “Molten” effects.
- If all bosses are killed on Heat Level 3, there is an additional 11th boss after Ragnaros.
All players must meet the fire resist requirement throughout the fight or they’ll take massive periodic ticks of damage. Wowhead has a decent guide on different sources of fire resist to help meet this threshold. Tier 1 armor also comes with built-in fire resist which will help as you gear up.