Every figure shows its source. Where a source is missing, the number is a placeholder — and it is never written as fact.
Latest on this boardLoot table read from Blizzard’s Adventure Guide journal · 8 Oct 2026Every item read from Blizzard’s Item API — stats, effects, sockets — with who can use it · 9 Oct 2026

By GamGem ResearchLast updated 9 Oct 2026

Our drawing of the type: Trinket. Not the in-game Tumor of the Swarm.
Our drawingTrinket
Dropped item · should I take it?

Tumor of the Swarm — Trinket drop, item level & who can use it

Rare trinket from Atroxus in Voidscar Arena: item level 292–311 by difficulty. 21 specs can use it — it carries Strength or Agility. Its effect decides more than its item level, so sim it.

Hero 3/6 · Trinket · Rare
Dropped on
Equipped ✎308
311+10 and upSIM NEEDED
why?
Why? · VerdictBuilt from the item level you set (308) against this drop on +10 and up (311), whether it has an effect, and whether your spec can use it. GamGem’s rule of thumb, not a sim: +6 or more is an upgrade, within ±5 a sidegrade, −6 or less a downgrade; any effect asks for a sim.

+3 item levels, but its effect decides — item level alone can’t price it.

Top keys: 6 specs wear it — most, 55% of Brewmaster Monk (n 318, #1 of 12 in trinkets), week of Oct 6–14. Every spec ›

Item level change308 → 311+3
Specs that can use itBlood Death Knight, Frost Death Knight +1921Grows toHero 6/6321Nearest competitorFont of Venomous Rage315
Equipgame data
why?
Why? · EffectThe effect line from Blizzard’s item record. Its numbers are at the record’s preview item level (108), not the level it drops at.

Equip: Your attacks have a chance to release toxic parasites that burst around you, dealing 173 Nature damage split among nearby enemies and healing you for 132.

Atroxus · Voidscar ArenaMythic+ dungeon · End-of-dungeon chestRoute ›
Sim neededIts effect can’t be priced by item level. A sim of your own character (Raidbots Top Gear or Droptimizer) settles it; no sim is attached here.

What actually changes?

why?
Why? · StatsBlizzard’s item record prints stats at a preview level that differs between items, so the rows compare how each item SPLITS its secondary rating — the share of each stat — not the raw numbers.
StatDroppedComparedΔ pts
Mastery0%100%−100
PrimaryStrength / Agility—
EffectEquipOn-use
Item level, same track311315

Shares of each item’s secondary rating, from Blizzard’s item records; the raw numbers sit at different preview levels, so they are not compared. Rows that move 20 points or more are lit.

How far can it grow?

why?
Why? · Upgrade trackItem level per rank is the gear page’s track table; every rank costs 20 Mistcrests of the item’s own track. A Mythic 344 drop is past the track and upgrades no further.
  1. Adven­turermax 282
  2. Vet­eranmax 295
  3. Cham­pionmax 308
  4. Heromax 321
  5. Mythmax 334
At 3/6: 311 item level
Out-levels 24 same-slot rivals: First Mate's Shellward, Gebbo's Bottomless Bag, Keeper's Seething Core….
No upgrade from where it dropped.

Sockets & extras

  • Socketsnone on this item0
  • Unique-equippedone at a timeyes

What does it compete with?

why?
Why? · CompetitionThe season’s other items for the same slot, the same armour and a shared primary stat, at their item level on the same track as this drop. “Different job” means one has an effect and the other does not — our rule.
311 · dropped on +10 and up

Its effect makes it a different job from the stat-only rivals — a sim decides here, not item level.

Which specs want it?

trinket · 21 of 40 specs can use it
why?
Why? · Spec demandCan use = the class wears this armour, has the weapon skill (each class’s Warcraft Wiki page) and the spec’s primary stat is on the item (Blizzard). Stat fit is OUR comparison of the item’s two biggest secondaries with a stat order a GamGem spec guide sources — not a guide’s pick.

It has no secondary stats, so no stat order applies — what it does is in its effect or its look.

Can use it · game data · full BiS lists

Who can use it: 6 tanks · 0 healers · 15 damage

Without its primary stat · 19 specs: Devourer Demon Hunter · Balance Druid · Restoration Druid · Augmentation Evoker · Devastation Evoker · Preservation Evoker · Arcane Mage · Fire Mage · Frost Mage · Mistweaver Monk · Holy Paladin · Discipline Priest · Holy Priest · Shadow Priest · Elemental Shaman · Restoration Shaman · Affliction Warlock · Demonology Warlock · Destruction Warlock

Stat fit is our comparison of the item’s two biggest secondary stats with a stat order a GamGem spec guide sources — not a guide’s pick. The BiS links open each spec’s own page on Method and Wowhead. Every class and spec ›

Where to get it again?

why?
Why? · SourceBoss and instance from Blizzard’s Adventure Guide journal. No source publishes drop rates, so none is shown.
  • AtroxusVoidscar Arena · End-of-dungeon chest
  • Voidscar ArenaMythic+ · end-of-dungeon chestOpen ›
  • No lockoutRaid Finder, Normal and Heroic bosses give loot once per difficulty each week; Mythic+ keys have no lockout.repeatable
  • Great Vault+10 and up · Myth 1/6318
RepeatableGreat Vault optionShared table · 8 itemsDrop rate not published

Effort to target: repeatable · 7 other items share its table

Also drops here · 7

Who wears it in top keys

6 of 40 specs · +16–23 keys, US+EU, week of Oct 6–14 (Blizzard API)

Share = of that spec’s top-key characters still in the spec when read, the part wearing this item in that slot (rings and trinkets: either slot). Counted by GamGem from Blizzard’s Mythic+ leaderboards and character profiles, 11,985 characters, read 2026-10-09. Top keys, not all players — what they wear, not a ranking of the item.

How sure is this?

why?
Why? · EvidenceEvery row says what kind of evidence it is. Simulations and logs are not attached — no source with terms we can show.
RowKindResultFromRead
Item recordgame data2 stats · 1 effect · 0 socketsBlizzard API2026-10-09
Item level by difficultysourced table292–311gear page sources2026-10-09
Who can use itgame data21 of 40 specsBlizzard API · Warcraft Wiki2026-10-09
Stat fitour comparisonno spec guide yetGamGem2026-10-09
Simulationsimulatednot attached——
Logs (who equips it)observednot attached——

Where evidence disagrees

  • • It carries Strength or Agility: one piece serves specs of 2 kinds, so they can want the same drop.
  • • The Great Vault pays 318 for +10 and up — more than the drop itself (311).

What else to look at?

Share with the group

Tumor of the Swarm311 TrinketSIM NEEDED308 → 311
Mythic+ · +10 and upSim needed
Atroxus · Voidscar Arena · checked 2026-10-09
Tumor of the Swarm — 311 Trinket
SIM NEEDED: 308 → 311 · +10 and up · Mythic+
Effect: Equip: Your attacks have a chance to release toxic parasites that burst around you, dealing 173 Nature damage split among nearby enemies and healing you for 132.
Source: Atroxus · Voidscar Arena
Can use it: 21 of 40 specs
Checked 2026-10-09 · Blizzard API data · GamGem

Ask about this drop

Try: “is it an upgrade?” · “where does it drop?” · “who can use it?” · “item level on Mythic?”

Full item record

IDs, raw stats, effects, flavour text
Environment
Live 12.1 — the 12.1.5 PTR is not mixed in
Item ID
250245
Quality (base)
Rare
Type
Armor · Miscellaneous
Binding
Binds when picked up
Required level
78
Preview item level
108 (Blizzard’s record — not the drop level)
Stats at preview level
Agility 7 · Strength 7
Effect 1
Equip: Your attacks have a chance to release toxic parasites that burst around you, dealing 173 Nature damage split among nearby enemies and healing you for 132.
Sockets
0
Unique-equipped
Unique-Equipped
◆ Blizzard — Game Data API: items, journal, specializations◆ Warcraft Wiki — Lockout◆ Warcraft Wiki — each class’s page◆ Method — Season 2 upgrade tracks◆ Method — raid, Mythic+, Delve and Prey loot◆ Method — Great Vault item levels

Voidscar Arena on video

Published by Tactyks on YouTube, 5 August 2026.

It plays in YouTube’s own player once you press play. Nothing is downloaded or re-hosted here, and nothing loads from YouTube until then.

Tumor of the Swarm — quick answers

Where does Tumor of the Swarm drop?

Atroxus in Voidscar Arena (End-of-dungeon chest), in Midnight Season 2. No source publishes its drop rate.

What item level is Tumor of the Swarm?

Mythic 0 292 · +2–3 295 · +4 298 · +5 302 · +6–7 305 · +8–9 308 · +10 and up 311. Item levels are the season’s track table, by difficulty or key level.

Which specs can use Tumor of the Swarm?

21 of 40: Blood Death Knight, Frost Death Knight, Unholy Death Knight, Havoc Demon Hunter, Vengeance Demon Hunter, Feral Druid, Guardian Druid, Beast Mastery Hunter, Marksmanship Hunter, Survival Hunter, Brewmaster Monk, Windwalker Monk, Protection Paladin, Retribution Paladin, Assassination Rogue, Outlaw Rogue, Subtlety Rogue, Enhancement Shaman, Arms Warrior, Fury Warrior, Protection Warrior.

Who uses Tumor of the Swarm in Mythic+?

6 of 40 specs wear it in top keys — Brewmaster Monk 55% (#1 in trinkets, n 318), Vengeance Demon Hunter 22% (#3 in trinkets, n 312), Protection Warrior 21% (#3 in trinkets, n 310), Guardian Druid 16% (#4 in trinkets, n 338), Protection Paladin 9% (#8 in trinkets, n 326). +16–23 keys, US+EU, week of Oct 6–14 (Blizzard API); 11,985 characters read. A measurement of top keys, not a ranking of the item.

What does Tumor of the Swarm do?

Equip: Your attacks have a chance to release toxic parasites that burst around you, dealing 173 Nature damage split among nearby enemies and healing you for 132. (Blizzard’s record, at its preview item level.)

What competes with Tumor of the Swarm?

32 items for the same slot: Font of Venomous Rage, Hex Lord's Dooming Idol, Voracious Heart of Ula'tek, Zul'jin's Guillotine Technique….

Sources & how we checked

We read Blizzard’s Item API for this item (ID 250245) on 2026-10-09 and took its boss from Blizzard’s Adventure Guide journal. Its item levels are the season’s track table, read for its source by difficulty. Who can use it joins each class’s armour and weapon skills (Warcraft Wiki) with each spec’s primary stat (Blizzard). Stat fit is our own comparison with a stat order a GamGem spec guide sources. Nothing here comes from a sim or from logs.

Midnight Season 2 · live patch 12.1 (the 12.1.5 PTR is not mixed in) · item data from Blizzard’s Game Data API, read 2026-10-09. Item levels are the season’s track table; spec fit is game data; stat fit is our own comparison. No player names, profiles or logos. Your item level, difficulty and spec are saved in this browser only.