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Latest on this boardRaid Finder wing 4, The Tomb of Ula’tek, opened — all eight bosses can be queued. · 8 Sept 2026Method’s Mythic guide updated · 22 Sept 2026Ula’tek eased on Heroic and Mythic: Spectral Coils −20%, the stage 3 adds −20% health, and Serpent’s Bite needs three soakers at any raid size. · 6 Oct 2026

By GamGem ResearchLast updated 7 Oct 2026

World of Warcraft · The Venomous Abyss

The Lost Explorers Heroic & Mythic guide

Raid · Midnight · Season 2 · boss 3 of 8 · Crypt of the Soulcoilers

Patch 12.1 · Curse of Ula’tekGuide: Method · Purke, 2026-08-14 ↗

Difficulty

Lost Explorers on Heroic: Hero 2/6 · 308 · tier shoulders

Verified 2026-10-07 · item levels: Icy Veins · fight: Method

PhaseCouncilPull
Mechanic 1 of 14United DefenseTank
What it doesIf all three explorers are within 30 yards, they gain 99% damage reduction until separated.
Your answerNot your job — the tanks handle it.
If missedThe guide names no single failure for it.
You:

What repeats?

  1. 1. Council · PullThree explorers plus Mor’zahi; each fish buys time, and all three must die together.

The loop: Mor’zahi reaches 100 energy → a fish resets him and empowers that turtle (suggested: Iku, Nama, Gebbo) → three feeds; the fourth 100 is the enrage.

Next three

  • Final Ascension — Give a Disgusting Fish to the controlled turtle, which resets his energy; only three feeds exist.
  • Fishy Feedback — Time breaks away from other heavy raid damage and heal through the DoT.
  • Throw Junk — An assigned crate team breaks every crate, using physical-resist and bleed-removal players.

Where the guide disagrees

Nothing found: the Heroic guide agrees with itself, and no later hotfix changes what it says about Lost Explorers.

What happens when? · Council

United Defense: Not your job — the tanks handle it.

When do tanks swap?

Two swaps run side by side — Iku’s tanks on Shredding Shards, Nama’s on Steady Strikes — trade as either ramps.

  • Never let all three explorers be within 30 yards of each other.
  • Keep two of them in cleave range, adjusting as Iku blinks and Gebbo moves.
  • Swap on Shredding Shards (Iku) and Steady Strikes (Nama) as they ramp.

Where do I stand?

  1. All three explorers never within 30 yards of each other; two can share cleave range.
  2. Spread about 30 yards for Blink Nova so Iku lands far from the raid.
  3. Bomb target drops Explosive Surprise at the room’s edge.
  4. Three soak groups for Mighty Thud, one on each marked player.
  5. Out of Nama’s front cone for Shell Spin.

Setup on Heroic: 2 tanks · 4 healers · 14 DPS; cleave and multi-dot help. From Method’s guide, 2026-08-14.

What does each role do?

Tanks
  • Never let all three explorers be within 30 yards of each other.
  • Keep two of them in cleave range, adjusting as Iku blinks and Gebbo moves.
  • Swap on Shredding Shards (Iku) and Steady Strikes (Nama) as they ramp.
Healers
  • Malevolent Presence deals raid Shadow damage every 2 seconds all fight.
  • Each fish brings Fishy Feedback: a raid hit and a 12-second DoT.
  • Dispel Icebound Flames when a cast is not interrupted.
  • Evoker dispels and racial abilities remove the Splinters bleed from the crate team.
Damage dealers
  • Keep the three explorers’ health even and kill them in one window.
  • If the kills must be spread out, the order is Gebbo, then Nama, then Iku.
  • Interrupt Icebound Flames.
  • Cleave and multi-dot help a lot; use Hero/Lust on pull.

Who does what? ✎

raid slots, not names

What changes by difficulty?

Raid Finder
Veteran 2/6 · 282
Normal
Champion 2/6 · 295
Heroic
Hero 2/6 · 308
Mythic
Myth 2/6 · 321

On Mythic

  • Popping a box now puts a hard bleed on the whole raid — give one player the boxes: two stacks, let it fall, repeat.
  • Hand over the fish with roughly four seconds left on Final Ascension, each time; Method’s order is Gebbo, Iku, Nama.
  • Gebbo’s bombs get only one mushroom each — mark bombs and mushrooms, and never pop a mushroom early.
  • Blink Nova goes off well away from melee — 20+ yards; Shell Spin only picks melee, so lure it toward the wall.

If it goes wrong?

Final Ascension
The raid wipes; the fourth time he reaches 100 there is no fish left, so it is the hard enrage.
Throw Junk
A crate left untouched for 25 seconds explodes as Relic Rupture on the whole raid.
Explosive Surprise
Anyone the Blast Wave touches takes lethal Fire damage.
Frostfire Volley
An opposite-element hit on a still-debuffed player sets off Elemental Explosion, likely a wipe.
Mighty Thud
A mark with nobody beside it sends the full damage to everyone instead.
Shell Spin
A stun on top of other mechanics gets players killed.

Practise: where do I go?

United Defense — what does the raid do?

Ask about this boss

Start from:

Every mechanic, in order

for healer

  1. United DefenseCouncilTankIf all three explorers are within 30 yards, they gain 99% damage reduction until separated.

    Your job: Not your job — the tanks handle it.

  2. Final AscensionCouncilKickAt 100 energy Mor’zahi channels Shadow damage on the raid every 0.5 seconds until everyone dies.

    Your job: Give a Disgusting Fish to the controlled turtle, which resets his energy; only three feeds exist.

  3. Fishy FeedbackCouncilHealEvery fish break hits the raid with Shadow damage and a 12-second DoT.

    Your job: Time breaks away from other heavy raid damage and heal through the DoT.

  4. Throw JunkCouncilSoakGebbo throws crates that slam nearby players; breaking one stacks a Splinters bleed, and one holds a fish.

    Your job: An assigned crate team breaks every crate, using physical-resist and bleed-removal players.

  5. Explosive SurpriseCouncilDodgeGebbo’s ultimate: a bomb lands on a player, then releases a Blast Wave across the room.

    Your job: Drop it at the edge; jump a Bouncy Mushroom as the wave nears, or blink, teleport or leap over it.

  6. Frostfire VolleyCouncilMoveIku’s ultimate: two waves of fire or frost bolts; each hit leaves a 60-second DoT and a matching patch.

    Your job: Stand in a patch of the other element to clear your debuff before wave two arrives.

  7. Mighty ThudCouncilSoakNama’s ultimate: marks 3 players and leaps to each, nearest first, splitting damage within 6 yards.

    Your job: Three soak groups, one per mark; afterwards leave the Aftershock craters.

  8. Shell SpinCouncilDodgeNama throws three shells in a cone in front of him that stun for 4 seconds.

    Your job: Stay out of Nama’s front.

  9. Blink NovaCouncilSpreadIku teleports to a player and deals Arcane damage to the raid, weaker the farther away you are.

    Your job: Spread about 30 yards apart so she lands far from most players.

  10. Icebound FlamesCouncilKickCast on one player for Frostfire damage plus a dispellable DoT and a slow.

    Your job: Interrupt it; dispel the DoT if a cast gets through.

  11. Shredding Shards / Steady StrikesCouncilTankIku’s shards stack 50% more shard damage taken for 80 sec; Nama’s hits stack 4% Physical damage.

    Your job: Not your job — the tanks handle it.

  12. Smashing ShovelCouncilAddsWhen another explorer dies, Gebbo hits harder with a shovel that knocks back each swing.

    Your job: Not your job — melee and ranged handle it.

  13. Relentless EscalationCouncilAddsWhen another explorer dies, Nama ramps by 100% damage each second for 30 seconds.

    Your job: Not your job — melee and ranged handle it.

  14. Cataclysmic InvocationCouncilAddsWhen another explorer dies, Iku casts a huge raid Fire blast that grows with every cast.

    Your job: Not your job — melee and ranged handle it.

One card for the raid

The Lost Explorers · Heroic · Council
NOW: United Defense (Tank) — Keep at most two in cleave range; tanks adjust as Iku blinks and Gebbo moves around.
NEXT: Final Ascension (Kick) — Give a Disgusting Fish to the controlled turtle, which resets his energy; only three feeds exist.
NEXT: Fishy Feedback (Heal) — Time breaks away from other heavy raid damage and heal through the DoT.
Setup: 2 tanks · 4 healers · 14 DPS; cleave and multi-dot help · Bloodlust: On pull
gamgem.com · from Method’s guide

How fresh is this?

Method — Heroic guide
2026-08-14
Method — Mythic guide
2026-09-22
Raid rows checked
2026-10-07
Ula’tek eased on Heroic and Mythic
2026-10-06
Raid Finder wing 4, The Tomb of Ula’tek, opened — all eight bosses can be queued.
2026-09-08
Patch 12.1.5
2026-10-13

Sources

The Lost Explorers video guides — Heroic & Mythic

plays in YouTube's own player
Normal & Heroic
Mythic

Each video is the channel’s own upload; a guide is filed under a boss or dungeon only when its own title names that one and no other. Nothing loads from YouTube until you press play, and nothing is re-hosted.

Loot from The Lost Explorers

9 items · Blizzard API, read 2026-10-09 · top keys: +16–23 keys, US+EU, week of Oct 6–14 (Blizzard API)

The Lost Explorers — quick answers

What kills groups on The Lost Explorers?

At 100 energy Mor’zahi casts Final Ascension and the raid wipes — a Disgusting Fish fed to a turtle resets him.

What is the Lost Explorers fight order?

Mor’zahi reaches 100 energy → a fish resets him and empowers that turtle (suggested: Iku, Nama, Gebbo) → three feeds; the fourth 100 is the enrage.

What raid setup does Lost Explorers need on Heroic?

2 tanks · 4 healers · 14 DPS; cleave and multi-dot help. Interrupts; bleed removal; immunities or mobility for the bomb wave.

When do you use Bloodlust on Lost Explorers?

On pull.

How do tanks swap on Lost Explorers?

Two swaps run side by side — Iku’s tanks on Shredding Shards, Nama’s on Steady Strikes — trade as either ramps.

What changes on Mythic Lost Explorers?

Popping a box now puts a hard bleed on the whole raid — give one player the boxes: two stacks, let it fall, repeat. Hand over the fish with roughly four seconds left on Final Ascension, each time; Method’s order is Gebbo, Iku, Nama. Gebbo’s bombs get only one mushroom each — mark bombs and mushrooms, and never pop a mushroom early. Blink Nova goes off well away from melee — 20+ yards; Shell Spin only picks melee, so lure it toward the wall.

What item level does The Lost Explorers drop?

Lost Explorers drops Raid Finder 282 · Normal 295 · Heroic 308 · Mythic 321 — item level by difficulty, before upgrades.

Is The Lost Explorers a tier boss?

Yes — the class set’s shoulders piece drops here.