This page covers healer-focused strategies for the Temple of Sethraliss dungeon. 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 information. I'll continue to update it as-needed.

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 Bosses

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

 Aderis and Aspix

• Avoid attacking the boss currently affected by Lightning Shield.
  • Aspix begins the fight with Lightning Shield.

Aspix

• With Lightning Shield:
  • Interrupt Jolt when possible.
  • At 50% energy, if you're affected by Conduction move at least 8-yards away from other players.
  • At 100% energy, Static Shock deals critical damage to all players.
• Without Lightning Shield:
  • Interrupt Gust when possible.
  • On Heroic, avoid the path between Aspix and the player affected by Gale Force.

Aderis

• With Lightning Shield:
  
  • At 50% energy, move at least 15-yards away from him to avoid A Peal of Thunder.
  • At 100% energy, avoid the impact location of Arc Dash.
  • On Heroic, stand near Aderis to split the damage from Arcing Blade.
• Without Lightning Shield:
  • Avoid the vortexes from Cyclone Strike.

 Healing Notes

• Use Cooldowns on Static Shock.
• Watch for players taking damage from Conduction.

 Debuffs to Track

• Minor: Conduction, Gale Force

 Addons

Healer DBM Settings for Aderis and Aspix

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 Merektha

• Avoid the impact locations of Noxious Breath and the resulting Toxic Pools.
• Turn away from Merektha when Blinding Sand is cast.
• During Burrow, avoid Merektha when she darts through the center of the room.
• Eggs along the outside of the room will periodically Hatch.
  • This alternates spawning sets of four Venomous Ophidian or Sand-crusted Striker.
  • Avoid the Dust Clouds created by Sand-crusted Striker.
  • Venomous Ophidian deal damage to random players with Cytotoxin (dispel, poison)
• On Heroic, players affected by A Knot of Snakes will need critical healing before the snakes are killed.

 Healing Notes

• Watch for players affected by A Knot of Snakes.

 Debuffs to Track

• Major: A Knot of Snakes
• Minor: Cytotoxin (dispel, poison)

 Addons

Healer DBM Settings for Merektha

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 Galvazzt

• Energy Cores will periodically spawn around the room and channel Galvanized into Galvazzt, increasing his energy.
  • Players must stand between these and the boss to slow down the energy gain as much as possible.
  • Blocking the energy will deal steadily increasing damage from Galvanized.
• At 100% energy, Consume Charge deals heavy damage to all players.
  • This grants Galvazzt a stack of Capacitance, increasing his damage done.
• Induction periodically deals moderate damage to the group.

 Healing Notes

• Use Cooldowns during Consume Charge and possibly Induction if Capacitance stacks are high.
• Watch for players with high stacks of Galvanized.

 Debuffs to Track

• Major: Galvanized

 Addons

Healer DBM Settings for Galvazzt

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 Avatar of Sethraliss

During this fight, players will be fighting against various adds while the Heart of Sethraliss is suspended in the center of the room.

• The Avatar of Sethraliss must be healed to full health to complete the encounter.
  • The Avatar can only be healed in chunks, first to 70%, then to 100%.
  • At each health break point, a new set of Hoodoo Hexers will spawn, halting healing.
• Hoodoo Hexer
  • Channels Taint on the Avatar of Sethraliss, decreasing the healing it receives.
• Heart Guardian
  • Applies Heart Attack to the tank, significantly increasing damage taken.
  • When killed, leaves behind an Energy Fragment.
    • Activate these to grant the Heart of Sethraliss Life Force, healing it for an additional amount each time it receives healing.
• On Heroic, Plague Doctor
  • Stun to interrupt or dispel Snake Charm (magic).
  • Interrupt Chain Lightning to prevent the damage dealt to the group.
• Avoid the Plague Toads summoned by Rain of Toads.
  • Being hit applies Plague (dispel, disease), reducing healing done and dealing stacking damage over time.
• Pulse deals light damage over time to the group.
• Avoid the impact locations of Cardiac Shock.

 Healing Notes

• Use Cooldowns to heal the Avatar of Sethraliss when no Taint channels are active.

 Debuffs to Track

• Major: Snake Charm (dispel, magic), Heart Attack

 Addons

Healer DBM Settings for Avatar of Sethraliss

 Trash Mobs

Below are notes for the trash mobs in the Temple of Sethraliss. The Temple of Sethraliss has a relatively linear layout. The trash below is ordered as if you're completing the bosses in the order they're listed above.

Entrance thru Aderis and Aspix

• Charged Dust Devil
  • Interrupt Healing Surge to prevent the large heal.
• Sandswept Marksman
  • Targets random players with Power Shot, dealing damage to everyone caught between the enemy and the targeted player.
  • Dispel Neurotoxin (poison) to remove or prevent the sleep effect.
• Sandfury Stonefist
  • Deals damage to all players with Ground Pound
• Krolusk Pup
  • Charges random players with Head Slam.
• Korlusk Hatchling
  • Going near these will reveal a Shrouded Fang.
• Shrouded Fang
  • Deal significant damage to the tank and melee with Blade Flurry

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Aderis and Aspix thru Merektha

• Scaled Krolusk Rider
  • Don't stand in front of these to avoid Noxious Breath (dispel, poison).
  • Deals damage to all players within 8-yards with Cleave.
  • Electrified Scales (dispel, purge) deals light to moderate damage to players.
• Venomous Ophidian
  • Dispel Cytotoxin (poison).
  • Dispel Neurotoxin (poison).
• Mature Krolusk
  • Targets random players with Headbutt.
  • Don't be in front of them to avoid Scouring Sand.
• Scaled Krolusk Tamer
  • Deals damage to all players within 8-yards with Cleave.
  • Electrified Scales (dispel, purge) deals light to moderate damage to players.
• Sand-crusted Striker
  • Dust Cloud breaks line of sight between players and enemies standing in or out of it.
• Crazed Incubator
  • Interrupt or avoid the lighting patches from Lightning in a Bottle.
  • Dispel Venomous Spit (poison).
  • Move at least 10-yards away during Pyrric Blast to avoid the critical damage.
• Faithless Tender
  • Interrupt Greater Healing Potion to prevent the healing.
  • Interrupt Drain or dispel the resulting Embryonic Vigor (purge) to prevent the healing and damage increase.
  • Dispel Venomous Spit (poison).
• This area also includes Sandswept Marksman, detailed above.

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Merektha thru Galvazzt

• Agitated Nimbus
  • Interrupt Accumulate Charge (dispel, purge) to prevent increased damage from Release Charge.
• Imbued Stormcaller
  • Avoid the impact locations of Call Lightning.
• Partway through, there is a lighting orb gauntlet. Avoid the orbs as you move through the area.
• Static-charged Dervish
  • Targets random players with Electrocute.
  • Jumps to random players with Spark, dealing damage to all players within 5-yards.

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Galvazzt thru Avatar of Sethraliss

• This area begins with a two-part lightning orb gauntlet. Avoid the orbs as you did before while moving through the area.
• The next area is a bit like a gauntlet.
  • Pick up one of the lightning orbs (Orb) from either side of the room and return it to the large snake skull in the back of the room to move on.
  • Faithless Conscripts will continually spawn.
  • Orb Guardians will steal the lightning orb from players, kill them to get it back.
  • Avoid the random lightning bold impact locations.
• Hoodoo Hexer
  • Interrupt Lava Burst to prevent the damage on the tank.
  • Dispel Flame Shock (magic).
• Heart Guardian
  • Applies stacks of Heart Attack to the tank, increasing damage taken.
• Plague Doctor
  • Interrupt Chain Lightning to prevent the damage dealt to the group.
  • Stun to interrupt or dispel Snake Charm (magic).

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 Trash Debuffs to Track

• Major: Necrotic Rot, Scouring Sand, Neurotoxin (dispel, poison)
• Minor: Noxious Breath (dispel, poison), Cytotoxin (dispel, poison), Venomous Spit (dispel, poison), Flame Shock (dispel, magic)
• Enrages to Dispel: None
• Buffs to Purge: Accumulate Charge, Electrified Scales, Embryonic Vigor

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 Trash Addons

Healer DBM Settings for Temple of Sethraliss Trash

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 Mythic+ Notes

In this section you'll find notes about certain interactions bosses and trash mobs have with the Mythic+ difficulty increase or certain affixes that make them more troublesome than normal.

Aderis and Aspix

• Static Shock will likely require mitigation cooldowns with Tyrannical on higher key levels.

Trash Mobs

• Sandfury Stonefist, Shrouded Fang, Scaled Krolusk Rider
  • Deal significant damage to the tank with Fortified.
• Hoodoo Hexer
  • Can deal significant damage to the tank if interrupts and dispels are unavailable. with Fortified.

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 Videos

Mythic 9, 1 Chest Clear, Restoration Druid PoV

Below is a video of me clearing Temple of Sethraliss on Mythic 9 difficulty in time for 3 chest.

Mythic 0 Clear, Restoration Druid PoV

Below is a video of me clearing the Temple of Sethraliss on Mythic difficulty.

Normal Clear, Restoration Druid PoV

Below is a video of me clearing the Temple of Sethraliss on Normal difficulty on the Battle for Azeroth Beta.

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