Molten Core is the first major raid in the WOW classics. In the Blackrock Depths, you can enter Molten Core, where you can finally defeat Ragnaros through a raid. However, entering Molten Core requires some work in advance.
There are two ways to get into Molten Core: completing the attunement, or traveling through Blackrock Depths.
Molten Core Attunement
Coordination with Molten Core means completing the Attunement to the Core mission of the Lothos Riftwaker in Black Rock Mountain. After completing this task, you can chat with Lothos to simply port it to Molten Core without having to participate in the raid. You can participate in the raid yourself, but it is very time consuming. The entrance to Molten Core is within the Blackrock Depths, which means that you and the other four players will need to spend time cleaning the dungeon to get into the team. In a 40-person raid, if you need everyone to enter Molten Core like this, it means that a group of 5 will need to be cleared from Blackrock Depths to Molten Core before the remaining 35 people can go through Blackrock Core 5 depth. Although this is possible, it will be very time consuming and you will likely take 1-2 hours to bring everyone in.
On the other hand, the mediation task itself is easy. You can pick up the "Reconciliation Core" at level 55 and simply remove it from the entrance of the Blackrock Depths to the Molten Core entrance to retrieve the rock fragments found outside the entrance. Once you return to Losos with the debris, you can talk to him at any time in the future, he will send you to the Molten Core, so that you can easily enter the team.
Recommended Classes for Molten Core
Molten Core is a team of 40 man, meaning you can have up to 40 people on the team. Although you can use almost any RAID component to complete Molten Core, there are certainly some key courses. An ideal raid team will have the following composition.
8 Warriors (2 dedicated Prot Warriors, 2 Warriors that can off-tank when needed)
6 Rogues
7 Mages
4 Warlocks
5 Priests (1 Shadow, the rest Healers)
3 HuntersHunters
2 Restoration Druids
5 Holy Paladins [A] / 5 Restoration Shamans [H]
Notable Trash in Molten Core
keep in mind that Trash pulls is the most dangerous in Molten Core, even more so than some bosses. The key to not removing Molten Core is consistency and security; always pull the garbage back as little as possible and always clean up more space than you think you need. The most dangerous trash mobs are listed below.
Lava Surgers are large rock elementals, they will knock back anyone nearby, so don't get close to the edge. Because of these elements, the Warlock can use the eviction icon to evict them when needed.
Lava Elementals are large rock elementals, they will stun and set fire to anyone nearby. Be sure to keep them away from the scope of the group. Because of these elements, the Warlock can use the eviction icon to evict them when needed.
Molten Giants and Molten Destroyers are large giants that will stun people near them. Tank these away from the ranged, and make sure to focus one down at a time.
Firelords are fire elementals that spawn adds. Kill the adds as they spawn, while killing the main Fire Lord quickly as well.
Ancient Core Hounds are large dogs that breathe fire in a cone in front of them. When killing them, make sure your tank is facing it.