BOSS 4 OF 8 · Add control · rotating arena

Vashnik the Malignant

Within The Chamber of Virulence, Vashnik the Malignant distills Ula'tek's venoms into ever more lethal forms. The creature lurks in its noxious chamber, brewing foul toxins to empower its brood.

Bloodlust: on pullNPC portrait not verified

Third-party strategy draftEncounter identity and localization are verified against Journal DB2 for 12.1.0.69814. Assignments, timings, arena plan, and difficulty deltas remain source_tracked and are not verified.

VERIFIED IDENTITIES

Encounter Journal overview abilities

Names, spell IDs, and matching icons are verified. 1 of 2 abilities have bilingual descriptions without unresolved client tokens in build 12.1.0.69814; other descriptions, all mechanic tags, and execution instructions remain withheld pending verification.

ImbibeSpell ID 1283164 · Icon ID 136070Blizzard API · 12.1.0.69814

Vashnik draws power from two nearby fountains, infusing himself with their power and gaining an application of Toxic Vapor. Each fountain bursts forth in an expulsion of toxins and creates living venoms that crawl toward the Malignant Cavity.

Malignant BurstSpell ID 1280189 · Icon ID 236271Blizzard API · 12.1.0.69814Description withheld: source contains unresolved client tokens

VERIFIED STRUCTURE

Encounter Journal phase headings

The Journal DB2 tree for 12.1.0.69814 has no explicit bilingual stage/phase/intermission headings. No phases were inferred from the strategy draft.

ENCOUNTER PLAN

Choose difficulty

Heroic

Every player helps cover Bile

Catalytic Bile creates individual soak zones.
Killing both Burning Venoms together can make Caustic Surge lethal.

ASSIGNMENTS

Mechanics by role

Tanks

Swap after every Dripping Fangs.
Move the boss far enough to lock the intended fountain pair.

Healers

Top Exploding Infection before the target leaves; clear Stygian absorbs.
For Siphoning Infection, allies inside the circle supply health.

Damage

Priority: Burning → Clotting → Shrouded Venoms.
Grip, root and knock adds away from the central cavity.

SEQUENCE

Timeline

PULL
Fire + ShadowStack Burning Venoms onto rooted Shrouded adds.
~1:30
Fire + BloodMove burning adds to Clotting Venom and control splits.
~3:00
Blood + ShadowKill Blood first while Shadow adds remain rooted.
LOOP
Repeat empowered cycleNever let an add touch the cavity.

Markers show mechanic order; exact timing shifts with group damage.

ARENA PLAN

Positioning

BOSST1T2GROUP AGROUP B××→→

Tank Vashnik between the next two fountains and rotate around the central cavity. Keep ranged spread for Catalytic Bile while preserving add-control lanes.

RECOMMENDED

Composition

2TANKS4HEALERS14DPS

Spread ranged for full soak coverage.

VERIFIED REWARD BAND

Encounter item levels

Difficulty	ilvl	Track
Raid Finder	285	Veteran
Normal	298	Champion
Heroic	311	Hero
Mythic	324	Myth

Encounter tier rewardChest tier token

This is a verified item-level band, not an item list. Loot rows are withheld until their canonical itemId, encounter source, difficulty, upgrade track, and chanceStatus are verified. The exact drop chance has not been published.

Source · verified 2026-09-14

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Difficulty

ilvl

Track

Raid Finder

285

Veteran

Normal

298

Champion

Heroic

311

Hero

Mythic

324

Myth