This page covers healer-focused strategies for the Neltharus dungeon in Dragonflight. While it's tailored for healers, other roles may also find the information useful. If you have any suggestions or feedback, you can leave a comment below or tweet @PrestonDvorak.

This guide has been updated and maintained based on my own experiences as well as Dungeon Journal and combat log information. I'll continue to update it as-needed.

Below are guides for the bosses in Neltharus, including their abilities, healer notes, and addon settings.

• Don't stand in front to avoid Magma Wave.
• When targeted by Grounding Spear, move more than 10-yards away from other players. This deals light damage to all players within 10-yards and spawns a Grounding Spear.
  • The targeted player has their movement speed reduced and is chained to the Spear by Grounding Chain.
  • Avoid the location of Erupted Ground around the Grounding Spear.
  • The Grounding Chain is used to deal with Fiery Focus, noted below.
• At 100% Energy:
  • Stay more than 10-yards away to avoid the moderate damage over time from Fiery Focus.
  • The tank should bring Chargath through a Grounding Chain to Stun him and remove Fiery Focus.
    • Breaking a Grounding Chain deals light damage and then light damage over time to all players with Slag Eruption.
  • Avoid the impact locations of Lava Splash.
• Charges random players with Dragon Strike, dealing light damage and then light damage over time.

• All players are now affected by Grounding Chain.
• Chargath must be brought through three Grounding Chains to trigger Fetter.
  • Fetter now also greatly increases his damage taken.

• Use cooldowns as-needed on Slag Eruption.
• Be prepared to use external defensive cooldowns on the tank while Fiery Focus is active.

• Major: Grounding Chain
• Minor: Dragon Strike

• The tank will be dealing with the extra damage and knock back effect from Heated Swings.
  • After the knock back, avoid the impact location of Heated Swings targeted on the tank.
• Every 30-seconds, during Might of the Forge:
  • When targeted by Blazing Aegis, stay more than 3-yards away from other players to avoid chaining the damage. Players hit take additional moderate damage over time from Blazing Aegis.
    • Avoid the impact locations of Blazing Eruption that emanate out from targeted players in a plus pattern.
  • For 10-seconds, deals moderate damage over time to all players with Blazing Hammer.
• Avoid the impact locations of Forgestorm.

• Avoid the Forgefire pools left behind by Heated Swings.
• Blazing Aegis now hits three players.

• Use cooldowns as-needed on Might of the Forge.

• Major: Heated Swings, Blazing Aegis, Blazing Aegis

• Don't stand in front when it turns to cast Blazing Charge.
  • Avoid the paths of Lava Waves emanating out from where Blazing Charge ends.
• When targeted by Lava Spray, avoid pointing it towards other players.
• At 100% Energy, casts Volatile Mutation:
  • Gains a stack of Magma Tentacle, which affects the potency of several other abilities as noted below.
    • Increases the damage dealt by Lava Spray by 100% per stack.
    • Increases the number of Lava Waves created by Blazing Charge by one per stack.
    • Increases the duration of Magma Eruption by 4-seconds per stack.
  • Deals moderate to heavy damage over time to all players with Magma Eruption.
• Avoid the impact locations of Magma Lob and the Liquid Hot Magma pools left behind.

• Blazing Charge now leaves behind Liquid Hot Magma pools.
• Gains Lava Empowerment if standing in a Liquid Hot Magma pool, greatly increasing damage dealt.

• Use cooldowns on Magma Eruption.

• Major: Liquid Hot Magma, Magma Eruption (Optional: can be nice to see the duration, but it affects all players at once)

• Don't stand in front when she turns to cast The Dragon's Kiln.
• During Magma Shield, gains a large damage absorption shield and deals increasing moderate to heavy damage over time to all players with Flame Eruption and stacks of Flame Vulnerability. 
  • Players can interact with gold piles around the room to find Magic Implements to assist in depleting the damage absorption shield.
    • Wand of Negation - target Sargha and use to damage the absorption shield.
    • Anti-Magic Bomb - target a location on the ground with Sargha in it to damage the absorption shield.
    • Azure Stone of Might - be within 10-yards of and facing Sargha before using to charge forward and damage the absorption shield.
    • Rose of the Vale - stand within 12-yards of Sargha and use to damage the absorption shield.
    • Seismic Boots - stand within 30-yards of Sargha and use to damage the absorption shield.
• Avoid the impact location of Burning Ember and the Burning Ground patch left behind.
  • This spawns a Raging Ember.
    • Raging Ember
      • Fixates on a random player with Burning Pursuit, dealing moderate melee damage and leaving Burning Ground patches behind as it moves.
• Deals light damage over time to random players with Molten Gold.

• During Magma Shield, avoid the impact locations of The Dragon's Eruption.
• Raging Embers now spawn with a Magma Shell damage absorption shield that can be damaged using Magic Implements.

• Use cooldowns while Magma Shield is active.

• Major: Molten Gold
• Minor: Burning Pursuit

Below are notes for the trash mobs in Neltharus. Neltharus has a somewhat open layout. Trash mobs are grouped by which side of the dungeons they're on, East or West.

• Throughout the dungeon, avoid standing on grates that are open to lava. Standing on these deals moderate damage over time with Burning.

West Side (Chargath)

• Burning Chains are present throughout this side.
  • Burning Chain
    • Can be right-clicked by a player, chaining them to the source, reducing movement speed, and dealing light damage over time with Burning Chain.
    • If an enemy passes over the linked chain, all enemies with 10-yards of it are Stunned by Burning Chain.
    • Pulling the chain more than 20-yards from its source breaks it, dealing light damage to and reduces the movement speed of all players within 10-yards of the linked player with Burning Chain.
    • Once broken, Burning Chain prevents the affected player from interacting with another Burning Chain while the effect persists.
• Qalashi Bonetender
  • Interrupt Mending Clay to prevent the healing over time.
  • Deals light damage to random players with Bone Toss.
• Qalashi Trainee
  • Don't stand in front to avoid Magma Fist.
  • Soothe Fired Up to remove the increased Haste effect.
• Overseer Lahar
  • Dispel Imbued Magma (magic) to remove the moderate damage over time effect.
  • Avoid the impact location of Eruptive Crush, and the subsequent set of smaller impact locations.
• Qalashi Hunter
  • Deals moderate damage to and incapacitates random players with Binding Spear until the Binding Spear is killed.
  • Deals light damage and then light damage over time to random players with Bold Ambush.
  • In some stairways, the Hunter may be asleep, allowing players to sneak by without invisibility if they want to.
• Tamed Phoenix
  • Interrupt Ember Reach to prevent the light damage dealt to random players.

East Side (Magmatusk)

• Qalashi Warden
  • Don't stand in front to avoid Volcanic Guard.
• Qalashi Thaumaturge
  
  • Deals moderate damage over time to random players with Magma Conflagration.
  • Can transform Ore Elementals into Molten Elementals with Molten Core.
    • Molten Elemental
      • Purge Granite Shell to remove the damage absorption effect.
      • Deals increasing light to moderate damage over time to all players with Molten Explosion and stacks of Molten Vulnerability.
• Qalashi Spinecrusher
  • The tank will be dealing with the extra damage and knock back effect from Brutal Strike.
• Qalashi Plunderer
  • Avoid the impact locations of Explosive Concoction.
• Ore Elemental
  • Can be turned into a Molten Elemental by Qalashi Thaumaturges, detailed above.

Upper Level (Gorek)

• Qalashi Lavabearer
  • Avoid the impact locations of Throw Lava and the Djaradin Lava pools left behind.
  • Upon death, stay more than 9-yards away to avoid the Djaradin Lava pool from Lava Spill.
• Qalashi Irontorch
  • Don't stand in front to avoid Scorching Breath.
  • Interrupt Mote of Combustion (dispel, magic) to prevent the damage over time effect on a random players.
    • When affected by Mote of Combustion (dispel, magic) stay more than 4-yards away from other players to avoid chaining the damage when the effect expires or is dispelled.
• Lava Flare
  • Interrupt Melt to prevent the light damage dealt to a random player.
• Qalashi Bonesplitter
  • The tank will be dealing with extra damage from Pierce Marrow if they end up out of melee range.
  • Deals moderate damage and then light damage over time to random players with Dragonbone Axe.
  • Soothe immediately.
• Irontorch Commander
  • During Scorching Fusillade stay more then 15-yards away from other players to avoid chaining the damage.
  • Avoid the impact locations of Conflagrant Battery.
  • Should be killed first or otherwise prevented from gaining excessive stacks.
  • Soothe immediately.
• Forgewrought Monstrosity
  • Deals light damage over time to all players with Forgewrought Fury.
  • At 10% health, begins casting Blazing Detonation, dealing heavy damage to all players if not killed before the cast finishes.
• Qalashi Blacksmith
  • The tank will be dealing with extra damage over time from Reverberating Slam.
  • Deals light damage to all players with Forgestomp.

Central Area (Sargha)

• This area includes Qalashi Wardens, detailed above.
• Apex Blazewing
  • The tank will be dealing with extra moderate damage and then moderate damage over time from Scalding Chomp.
  • Deals light damage over time to all players and continually pushes them away with Candescent Tempest.\
  • Soothe immediately.
• Qalashi Lavamancer
  • Interrupt Lava Bolt to prevent the moderate damage dealt to the tank.
  • Deplete the Molten Barrier effect quickly so Molten Army can be interrupted to lessen the number of Lava Spawns created.
    • Lava Spawn
      • The tank will be dealing with light melee damage.
  • Upon death, stay more than 9-yards away to avoid the Djaradin Lava pool from Lava Spill.
  • Should be killed first or otherwise prevented from gaining excessive stacks.

• Major:
  • Magic Dispel: Imbued Magma (dispel, magic), Mote of Combustion (dispel, magic), Burning
  • Damaging: Binding Spear, Reverberating Slam, Magma Conflagration, Scalding Chomp
• Minor:
  
  • Damaging: Bold Ambush, Dragonbone Axe, Burning Chain
• Enrages to Soothe: None
• Buffs to Purge: Granite Shell
• Root Effects: None