Gnomeregan Raid Guide: How to Defeat Mekgineer Thermaplugg

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How to defeat Mekgineer Thermaplugg? If this is your question, then you have found the right Gnomeregan guide!

Gnomeregan Raid Guide: How to Defeat Mekgineer Thermaplugg

Key Takeaways

Mekgineer Thermaplugg’s battle has four phases:

  • Phase 1: Tank the boss along the wall to reduce Flame Thrower damage. Kite to avoid excessive debuff stacks. Alternate tanking for debuff recovery.
  • Phase 2: Beware of Freezing stacks, dispel with shapeshifting or Free Action Potions, and manage Coolant Discharge and Supercooled Smash.
  • Phase 3: Dispel Radiation Sickness, and interrupt Toxic Ventilation spells to prevent raid-wide damage.
  • Phase 4: Prepare the strongest cooldowns for Phase 4. Manage bomb spawns and interrupt Toxic Ventilation. Success in defeating the mecha leads to a simpler confrontation with Mekgineer Thermaplugg.

As the ultimate adversary in the Season of Discovery Gnomeregan raid, Mekgineer Thermaplugg is your final challenge. Below, you will find step-by-step instructions on how to defeat Mekgineer Thermaplug in the 10-player Gnomeregan raid. For more tutorials on overcoming the other five Gnomeregan bosses and gaining deeper insights into the raid, explore our comprehensive guide below:

How to Defeat Mekgineer Thermaplugg in SoD Gnomeregan Raid

How to Defeat Mekgineer Thermaplugg in SoD Gnomeregan Raid

The last WoW SoD Gnomeregan dungeon boss encounter consists of four Phases. In each Phase, one of the columns around can start spawning bomb-adds. Adds deal AoE damage of different types depending on the Phase. Each add can be defeated without taking damage with a distant attack or cast. But they appear from the activated column until someone presses the red button on it. After the button is pressed, stay still for a second. It’s reported that sometimes the button doesn’t work if you press it and immediately run away.

A player pressing the button receives damage from the fallen bomb, and also exchanges 30% HP for 20% Mana. Besides, the character won’t be able to press the button for another 30 seconds. It’s recommended to make Healers or Ranged players responsible for pressing buttons.

During Phase 1, Mekgineer Thermaplugg and his mecha should be tanked along the wall with the entrance to the room. When it uses Flame Thrower, the main Tank should continuously kite it to the left or to the right running away from its melee range. This way, Tank avoids getting many stacks of the debuff that Thrower applies. The debuff increases the damage taken from this ability. Therefore, when the boss uses the spell again, Off-Tank, or Warlock’s or Hunter’s pet must taunt the boss and kite it in the other direction along the wall. Thus, you’ll buy time for the main Tank to regenerate and have its debuff stacks expire.

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At 50% HP, the boss enters Phase 2. It restores HP to 100%. All damaging mechanics now apply Freezing stacks. Each stack decreases the character’s movement speed. 11 stacks make the character immobile. This magical debuff can be dispelled. Lucky Druids can get rid of the debuff with shapeshifting. Free Action Potion also helps to resist it. The boss also uses Coolant Discharge and Supercooled Smash skills. 

The first is an AoE spell that applies a stack to the whole raid, and deals damage depending on the number of debuff stacks on players in the raid group. If someone has 11 stacks during this AoE, it wipes the raid. The smash is a tank-buster mechanic that also applies freezing stacks when hit. Make sure to heal up the tank during this cast and swap tanks if the main tank reaches the maximum stacks of freezing. Don’t forget to press the red button. Phase 2 bombs leave puddles applying a Freezing stuck if you get in it.

Phase 3 begins when the boss has 50% HP too. It replenishes HP again. Now its mechanics and explosions of new bombs apply the Radiation Sickness debuff that increases the taken Natural damage. Be sure to dispel the debuff. Periodically, the boss casts the Toxic Ventilation channeling spell. It doesn’t have a cast bar, but it must be interrupted so that the raid doesn’t receive huge damage.

At 50% HP, the boss enters Phase 4. Again, it gets 100% HP, but this time, you can bring it to 0%. The strongest cooldowns should be saved for this Phase. Here the boss uses all the mechanics you’ve seen. Columns also spawn bombs of all types. The ways to avoid their negative impact don’t change. Kite the boss during Flame Thrower, interrupt Toxic Ventilation, dispel negative effects, and press the red button in time. After it’s defeated, Mekgineer Thermaplugg appears. Compared to the encounter, this Gnome will seem like a weak mob.

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