wow Heroic Difficulty Operation Mechagon in Visions of N'Zoth (Official Preview)

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The Operation Mechagon dungeon will be split into two instances and available on Heroic difficulty next week. If you are still working on unlocking Mechagnomes, you will be able to complete the final portion of the story (The Mechagonian Threat) on Heroic instead of Mythic. Here is the official preview of the dungeon.

Blizzard also made some changes to the dungeon now that it has been split into two and you can read those below.

Blizzard (Source)

Dungeons and Raids

Operation: Mechagon

• Operation: Mechagon has now been split into two new instances, Mechagon – Junkyard and Mechagon – Workshop.
  • Developers’ note: During the Rise of Azshara content update, Operation: Mechagon made its debut as an epic and challenging mega dungeon. Now that it’s heading into the Mythic Keystone system, we’re making some adjustments to bring its difficulty in line with that of other Mythic Keystone dungeons.
• Mechagon – Workshop
  • Reduced variability in damage output for a number of creatures throughout the dungeon.
    • Developers’ note: The main goal of these changes are to make the damage output of affected enemies more consistent by significantly reducing the variance of spell cast timers.
  • Platinum Pummeler
    • Now casts B.4.T.T.L.3. Mine more frequently on all difficulties.
    • The missile destruction visual should now always display and warn the player before impact on all difficulties.
  • Gnomercy 4.U.
    • Vent Jets
      • Gnomercy now turns toward the target of Fixate before its cast.
  • Tussle Tonks
    • Buzz Saw damage dealt reduced by 80%.
      • Developers’ note: Left untouched, this fight would be lethal at higher Mythic Keystone levels with Tyrannical active. To keep the chaos of the fight intact, we reduced the damage of the Buzz Saws while retaining their knockback effect. 
  • Waste Processing Unit
    • Mega Drill precast increased to 3.5 seconds (was 2 seconds).
      • Developers’ note: Mega Drill is a dangerous ability and by slowing down its cast players will have a little more time to react.
  • K.U.-J.O.
    • Venting Flames
      • Increased the distance at which players are safe from Venting Flames when standing behind a Junk Cube.
  • Defense Bot Mk III
    • Arcing Zap damage reduced by 12%.
    • Short Out’s damage reduced by 20%.
  • Blastatron X-80
    • Capacitor Discharge’s damage increased by 40%.
  • King Mechagon
    • Pulse Blast’s damage has been reduced by 37%.
      • Giga-Zap (Phase 1)
        • Initial damage reduced by 44%.
      • Giga-Zap (Phase 2)
        • Initial damage reduced by 50%.
    • Recalibrate’s damage reduced by 15%.
• Mechagon – Junkyard 
  • Scrapbone Bully
    • Headbutt damage increased by 25%.
    • Shockwave damage reduced by 9%.
  • Scrapbone Trashtosser
    • Throw Trash’s projectile now moves slightly slower.
  • Scrapbone Grinder
    • Skullcracker’s damage dealt reduced by 11%.
    • Enrage
      • Increased cast time to 2 seconds (was 1.5 seconds).
      • Reduced duration to 10 seconds (was 12 seconds).
  • King Gobbamak
    • Cave In damage dealt reduced by 37%.
  • Pistonhead Mechanic (Junkyard) and Mechagon Mechanic (Workshop)
    • Overclock is now a Magic dispel for both enemies (previously one was Magic and one was Enrage).
  • Pistonhead Blaster
    • Ground visual of Scrap Grenade slightly reduced.
      • Bolt Buster damage dealt reduced by 25%.
    • Taze damage dealt reduced by 20%.
  • Slime Elemental
    • Slimewave damage reduced by 28%.
  • Gunker
    • Toxic Fumes damage dealt reduced by 25%.
  • Wreck
    • Reduced to 100% Weapon Damage per hit (was 150%).
    • Increased stacking vulnerability to 100% (was 75%).
      • Developers’ note: The net result of these changes roughly reduce Wreck’s damage output by 25% and puts a greater emphasis on tanks recognizing that this ability is happening so they can try to mitigate it before the really big hit at the end. 
    • Fulminating Zap’s periodic damage reduced by 20%.
  • Weaponized Crawler
    • Scrap Cannon
      • No longer cast while Shock Coil is active.
  • Scrapbone Bully
    • Enrage
      • Increased cast time to 2 seconds (was 1.5 seconds).
      • Reduced duration to 10 seconds (was 12 seconds).

Here is the official preview of the dungeon.

Blizzard (Source)

Prince Erazmin leads a group of unlikely allies on a desperate mission into the heart of Mechagon. In a race against time, they must overcome King Mechagon’s army of mechanized monstrosities and defeat the mad genius before his doomsday device purges all organic life from Azeroth.

Heroic Difficulty Operation: Mechagon is accessible by using Group Finder (I), where players will find this mechanically marvelous dungeon split into two parts—the Junkyard and the Workshop. You’ll need to have an item level of 345 to be able to queue. Beginning January 21, those looking to amp up the challenge of this dungeon will also be able to take on Mythic Keystones.

Dungeon Bosses: 8 (Heroic split into 4 and 4)
Difficulties: Heroic and Mythic 
Level: 120

OPERATION: MECHAGON – JUNKYARD

King Gobbamak: Obsessed with hoarding dangerous technology found amongst the scrap, King Gobbamak sits upon a pile of doomsday weapons that he lacks the intelligence to operate or understand.

Gunker: After years of coalescing into a concentrated cesspool. Mechagon's toxic waste has gained malevolent sentience. With the sanitation systems disabled, Gunker is free to ooze across all of Azeroth.

Trixie & Naeno: Trixie and Naeno, two of Bondo’s top lieutenants, have a turbulent relationship. While Trixie prides herself on ruthless efficiency, Naeno is the embodiment of chaos while behind the wheel. The only thing they have in common is their penchant for senseless violence, which they enjoy dispensing on anyone foolish enough to wander into their territory.

HK-8 Aerial Oppression Unit: Predator of the skies, the HK-8 Aerial Oppression Unit soars over the yard executing its prime directive, disintegrating all trespassers. With impenetrable armor and a lethal host of weapons, it annihilates all who are caught in its shadow.

OPERATION: MECHAGON – WORKSHOP

Tussle Tonks: Mechagon’s premier mechgineers test their mettle (and metal) by building customized combat robots. While these tonks typically battle each other for glory, they combine their efforts to repel foolhardy organic intruders who dare venture into Mechagon.

K.U.-J.0.: As the repository for the city’s refuse, the Under Junk is a prime target for gnomes from Bondo’s gang who intend to steal valuable mechanical components. While Trash Mistress Wendy Cogsworth ceaselessly sorts the city’s junk, her loyal guard dog, K.U.-J.0., keeps out unwelcome intruders—mechagnomes and adventurers alike.

Machinist's Garden: Beautiful and dangerous, Head Machinist Sparkflux's metallic gardens are designed for both recreation and retribution. With a flick of a switch, the idyllic scenery transforms into a death trap from which no interloper can escape.

King Mechagon: As maniacal as he is brilliant, King Mechagon despises all organic life. With his mechoriginator primed and ready, nothing stands in the way of his scheme to purge the curse of flesh from Azeroth and mechanize the entire world.

There’s a variety of loot just waiting to be pulled from the scrap in this dungeon full of mechanized monstrosities. Seek out your allies and join the discussion on the forums here.