The Thunder Forge (quest)

The Thunder Forge is the second step of Wrathion's Patch 5.2 legendary quest chain. In order to complete this quest, players must have completed Wrathion's first step, Secrets of the First Empire (20 secrets) and I Need a Champion (Wrathion exalted). Additionally, players must complete all of the Isle of Thunder solo scenario quests up to and including To the Skies! (quest)

The majority of this quest takes place in a relatively difficult solo scenario, which can be started by speaking with Wrathion in the Thunder Forges.

Objectives
Progress through the Isle of Thunder until you unlock the Thunder Forge. Meet Wrathion outside the Thunder Forge and complete his task.
 * Unlock the Thunder Forge
 * Complete Wrathion's Task

Description
Everything is prepared,, and I have selected you to be my champion.

Next, we must infiltrate the legendary Thunder Forge of Lei Shen himself! You and your faction will need to advance forward until the Thunder Forge is exposed, if it isn't already.

Once you have infiltrated the forge, meet me there. Be ready for a fight!

Rewards
You will receive:

Progress
The Mogu will not appreciate my tinkering with their ancient forge. But we won't let that stop us, hmm?

Completion
Behold! The Lightning Lance! A conduit that can channel and control the very same power that the Thunder King used to found an empire.

It is dormant... but you're about to change that. If you're worthy.

Gains

 * 294,000 XP
 * +250 reputation with The Black Prince

Stage 1: Speak with Wrathion

 * Speak with Wrathion to figure out how to activate the Thunder Forge.


 * Speak with Wrathion

Walk forward a few yards to speak with Wrathion:


 * Good to see you again adventurer. Are you ready to begin?

Stage 2: Forged from Trillium

 * Pour the trillium into the molds and begin charging the Thunder Forge.


 * Trillium poured
 * say
 * say

Go to the nearby Mogu Crucible and click it to proceed.

Stage 3: Activate the Thunder Forge

 * Defend Wrathion while the Thunder Forge charges.


 * Activate the Thunder Forge
 * Slay Forgemaster Vul'kon

At the start of this stage three Shado-Pan appear, a Shado-Pan Defender leading two Shado-Pan Warriors, jumping down from the wall along with the mogu.


 * say
 * bossemote
 * say
 * say
 * yell

Several waves of mogu will appear as Wrathion charges up the device, occasionally the forge will send out a buff.
 * bossemote

When near its full charge:
 * bossemote

When the charge is at 100% Forgemaster Vul'kon appears:
 * bossemote
 * bossemote

Stage 4: Into the Forge

 * Talk to Wrathion to start the Thunder Forge.


 * Start the Thunder Forge


 * say
 * say
 * Wrathion switches to his black dragonwhelp form and flies into the main Thunder Forge building, then returns to his humanoid form.
 * say
 * say
 * say
 * say

Speak with Wrathion:
 * Are you ready for me to start up the Thunder Forge? Things could get a bit hairy.

Stage 5: Corruption Detected

 * Defend the Celestial Blacksmith while it forges the Lightning Lance.


 * Blacksmith Defended


 * say

Sha start appearing as a Celestial Blacksmith and Celestial Defender appear.
 * say
 * say

During the fight the Celestial Defender will drop healing lights announced with:
 * bossemote


 * bossemote
 * The light heals players for about 25,000 a tick.

The Celestial Blacksmith will run between anvils will it becomes overcharged, while also being attacked by the sha. If killed the event will need to be reset.
 * bossemote


 * bossemote

Clicking the anvil will cause the smaller sha nearby to be destroyed and stunning the larger one. After several rounds of this, when the blacksmith is finally finished:
 * say
 * Wrathion overcharges the forges, causing all the sha to dissipate.
 * say

Final Stage: Manifested Corruption

 * ''Defeat the Sha Amalgamation assaulting the Thunder Forge.


 * Destroy the Sha Amalgamation


 * The sha reappear forming into the Sha Amalgamation.
 * say
 * say
 * say

This fight will take some time, as the boss-level Sha Amalgamation has over 31 million health and the following abilities:
 * bossemote
 * bossemote
 * bossemote
 * bossemote
 * bossemote
 * bossemote
 * bossemote
 * bossemote
 * bossemote

The Celestial Defender will again try to tank the amalgamation, but it occasionally gets banished with Dark Binding. The defender retains the green healing beam as well, but that may not be as useful with the area-denial abilities the amalgamation uses. It will either Shadow Burst when the player is within 10 yards, or Shadow Crash the player's position at range. Don't get hit by either. The amalgamation also unleashes a Meteor Storm that targets points on the ground indiscriminately, and also follows the player around. The amalgamation will also randomly summon a Debilitating Sha with 200,000 health that must be killed immediately.

Champions who typically act as healers should focus on dispelling the defender and then worrying about doing damage.

However, the most important move is Insanity. After a few-second wind-up, the amalgamation will channel Insanity for 60 seconds, which ticks for roughly 100,000 Shadow damage every second. This can only be prevented by using one of the seven overpowered anvils. Insanity is on a 30-second cooldown, and the boss will try to cast it as soon as it's off the cooldown. Each anvil can only be used once, so the champion and defender must get the amalgamation down to 20% health before the eighth Insanity cast kills the player.

At around 20% of total health remaining the lance will be ready to be used against the sha:
 * say
 * bossemote

The lance spawns on the ground near Wrathion's position and is bathed in light. Interact with it, then quickly use the bonus action button to finish off the encounter:

On victory:
 * say
 * say

Speak with Wrathion to complete the quest. Complete this quest, then pick up the followup, Spirit of the Storm Lord, before leaving the scenario.