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Help Omeluum Investigate the Parasite

An Act 1 Underdark sub-quest in which the player helps Omeluum investigate the tadpole by retrieving ingredients from the Arcane Tower and testing a potion.

RoleOptional investigation into a possible cure for the player character's parasite.
Statusavailable in Act 1
Importancesupporting
RewardRing of Mind-Shielding
  • GameBaldur's Gate 3
  • ActAct 1
  • Quest typeSub-quest
  • RegionUnderdark
  • Starting locationEbonlake Grotto
  • Ingredient locationArcane Tower
  • Primary rewardRing of Mind-Shielding
  • Cure outcomeFails to remove the tadpole

The source pack does not provide a mission number, estimated time, combat difficulty, or numeric rewards.

Key takeawaysSpoilers

The essential route is short, but its result is not what the player is hoping for.

  • Start with Blurg Speak to Blurg at Ebonlake Grotto and discuss the tadpole to be introduced to Omeluum.
  • Gather two ingredients Omeluum asks for a Tongue of Madness mushroom and Timmask Spores from the nearby Arcane Tower.
  • The potion is not a cure After the ingredients are returned, Omeluum prepares a potion that fails to remove the tadpole.
  • Expect a parasite-related change The failed treatment unlocks a new ability and strengthens the parasite instead of curing it.
  • Claim the ring Omeluum offers the Ring of Mind-Shielding to help calm the parasite and protect the wearer from its influence.
  • Completion has later relevance Finishing the quest lets Omeluum become a trader and creates the potential for another encounter in Act 3.

Help Omeluum Investigate the ParasiteSpoilers

Help Omeluum investigate the tadpole in the Underdark, then decide what to do after his attempted treatment fails.

Help Omeluum Investigate the Parasite is an Act 1 sub-quest in Baldur's Gate 3 centered on the player character's search for a cure. It begins in Ebonlake Grotto, where speaking with Blurg and discussing the tadpole leads to an introduction to Omeluum. Unlike the hostile mind flayers associated with the parasite's wider threat, Omeluum is described as having broken free from the Elder Brain's control and is willing to investigate the infection.

Omeluum's proposed solution requires ingredients from the nearby Arcane Tower: a Tongue of Madness mushroom and Timmask Spores. The quest therefore links a conversation in Ebonlake Grotto with an ingredient-gathering objective in the Underdark. Once both ingredients have been obtained, returning them to Omeluum allows him to prepare a potion intended to test the parasite rather than simply advancing the investigation through dialogue.

The treatment does not remove the tadpole. Instead, the potion unlocks a new ability and strengthens the parasite, making the result a major turning point for the quest's premise. Omeluum then offers the Ring of Mind-Shielding to help calm the parasite and protect its wearer from the parasite's influence. Completing the quest also allows Omeluum to become a trader and opens the possibility of encountering him again in Act 3.

The quest's later significance extends beyond its immediate reward. The source material notes that killing the githyanki or interacting with Omeluum in specific ways can affect later story developments, but it does not define every qualifying action or consequence. Treat those broader outcomes as spoiler-sensitive and avoid assuming that the investigation itself provides a cure.

Where this sits

Quest startSpeak with Blurg about the tadpole
InvestigationMeet Omeluum and accept the ingredient request
RetrievalFind the requested ingredients in the Arcane Tower
TestReturn to Omeluum for the potion experiment
AftermathReceive the Ring of Mind-Shielding
  1. 1BlurgcharacterThe initial conversation point.
  2. ●OmeluumcharacterThe investigator who provides the request.
  3. 3Arcane TowerlocationThe ingredient-gathering location.
  4. 4Ring of Mind-ShieldingitemThe primary post-investigation reward.

The quest moves from a conversation in Ebonlake Grotto to an ingredient search in the Arcane Tower, then returns to Omeluum for the test.

Requirements

The quest begins through a conversation in the Underdark and requires two ingredients before Omeluum can conduct his test.

  • RequiredReach Ebonlake GrottoThe starting conversation with Blurg takes place at Ebonlake Grotto in the Underdark.
  • RequiredDiscuss the tadpole with BlurgThe player must raise the subject of the tadpole so Blurg can introduce Omeluum.
  • RequiredTongue of MadnessOmeluum requests a Tongue of Madness mushroom for the investigation.
  • RequiredTimmask SporesOmeluum also requests Timmask Spores from the Arcane Tower.
  • RequiredReturn to OmeluumBoth requested ingredients must be brought back before the potion can be prepared.

Objectives

  1. Speak with Blurg at Ebonlake GrottoDiscuss the player character's tadpole to begin the chain of introductions.
  2. Meet OmeluumListen to Omeluum's investigation and accept the request for two ingredients.
  3. Find a Tongue of Madness mushroomSearch the Arcane Tower for the first ingredient named by Omeluum.
  4. Find Timmask SporesSearch the Arcane Tower for the second ingredient named by Omeluum.
  5. Return the ingredients to OmeluumGive Omeluum both ingredients so he can prepare the potion.
  6. Confront the result of the testThe potion does not remove the tadpole and instead strengthens the parasite.
  7. Receive Omeluum's offerAfter the failed cure attempt, Omeluum offers the Ring of Mind-Shielding.

WalkthroughSpoilers

  1. 01

    Speak with Blurg about the tadpole.

    Find Blurg in Ebonlake Grotto

    Travel to Ebonlake Grotto in the Underdark and speak with Blurg. The relevant conversation begins when you discuss the tadpole, so do not expect the investigation to start from the Arcane Tower itself.

    Location: Ebonlake Grotto

    TipBegin the quest through the conversation in Ebonlake Grotto before searching for the ingredients.

  2. 02

    Meet Omeluum.

    Accept Blurg's introduction to Omeluum

    Blurg introduces Omeluum after hearing about the tadpole. Follow the conversation into Omeluum's investigation rather than treating the introduction as a separate cure; Omeluum is the character who gives the retrieval request.

    Location: Ebonlake Grotto

    Watch outThe source material does not specify every dialogue option, so the exact wording of the conversation should not be assumed.

  3. 03

    Learn which ingredients Omeluum needs.

    Hear Omeluum's proposed investigation

    Omeluum examines the parasite problem and asks for two ingredients that can be found at the nearby Arcane Tower. The request is for a Tongue of Madness mushroom and Timmask Spores, making both items necessary for the next stage.

    Location: Ebonlake Grotto

    Checkpoint
  4. 04

    Reach the ingredient-gathering location.

    Travel to the Arcane Tower

    Leave Ebonlake Grotto and make your way to the Arcane Tower in the Underdark. The supplied material identifies the tower as the source of both requested ingredients, but it does not establish a precise entrance, route, floor, or hazard layout.

    Location: Arcane Tower

    TipKeep the two requested names visible while searching: Tongue of Madness and Timmask Spores.

  5. 05

    Gather a Tongue of Madness mushroom.

    Collect the Tongue of Madness

    Search the Arcane Tower for a Tongue of Madness mushroom and secure it for Omeluum's experiment. The source pack confirms the ingredient and location but does not provide a precise room or pickup position.

    Location: Arcane Tower

  6. 06

    Gather Timmask Spores.

    Collect the Timmask Spores

    Continue searching the Arcane Tower for Timmask Spores, the second ingredient in Omeluum's requested mixture. Keep the spores with the Tongue of Madness until both ingredients are ready to return; no separate alternate ingredient is supported by the source material.

    Location: Arcane Tower

  7. 07

    Give Omeluum the requested ingredients.

    Return to Omeluum with both ingredients

    After obtaining the Tongue of Madness and Timmask Spores, return to Omeluum and present the requested ingredients. The return is the transition from gathering evidence to testing a potion on the parasite.

    Location: Ebonlake Grotto

    Checkpoint
  8. 08

    Complete Omeluum's potion test.

    Allow Omeluum to prepare the potion

    Omeluum uses the gathered ingredients to prepare a potion for testing. This is the quest's major spoiler point: the experiment is intended to address the parasite, but it does not remove the tadpole.

    Location: Ebonlake Grotto

    Watch outDo not continue expecting the potion to provide a cure; its confirmed result is a failed removal attempt.

  9. 09

    Resolve the result of the potion test.

    Deal with the strengthened parasite

    The failed potion test unlocks a new ability and strengthens the parasite instead of curing it. The source pack does not name the ability, so this guide does not assign it a specific title or describe mechanics that are not confirmed here.

    Location: Ebonlake Grotto

    Watch outThis outcome is a major story spoiler and changes the parasite situation rather than ending it.

  10. 10

    Resolve Omeluum's reward offer.

    Accept or decline the Ring of Mind-Shielding

    After the test, Omeluum offers the Ring of Mind-Shielding. The ring is described as helping calm the parasite and protecting the wearer from its influence, and it serves as the primary reward for the investigation.

    Location: Ebonlake Grotto

    TipIf you want the quest's stated primary reward, complete the conversation with Omeluum rather than leaving immediately.

    Checkpoint
  11. 11

    Carry the outcome into the wider story.

    Review the quest's later consequences

    Completing the quest allows Omeluum to become a trader and opens the potential to encounter him again in Act 3. The source also warns that killing the githyanki or interacting with Omeluum in specific ways can affect later developments, without listing all qualifying choices.

    Location: Later story progression

    Watch outThe exact later consequences of every interaction are not fully specified in the source material.

Mission mechanicsSpoilers

This quest is primarily a conversation-and-retrieval investigation rather than a confirmed boss mission. Its central mechanic is the handoff between characters and locations: Blurg starts the discussion in Ebonlake Grotto, Omeluum defines the experiment, and the Arcane Tower supplies the two named ingredients. The source material does not establish a required combat encounter, a puzzle solution, or a specific route through the tower, so those details should not be treated as mandatory steps.

The quest's most important mechanical distinction is between investigating a cure and actually removing the parasite. Returning the requested ingredients enables Omeluum's potion test, but the test fails to remove the tadpole. Its confirmed effect is instead to unlock a new ability and strengthen the parasite, after which Omeluum offers the Ring of Mind-Shielding as a way to help calm it.

Completion also changes Omeluum's later role. He can become a trader, and the quest opens the potential for another encounter with him in Act 3. Because the source refers to specific interactions and the killing of the githyanki as factors in later story development without enumerating every consequence, players should regard those branches as context-sensitive rather than following an unsupported fixed outcome.

What works and what does notSpoilers

Strengths

  • The quest provides a clear investigation route from Blurg to Omeluum and then to the Arcane Tower.
  • Its ingredient request gives the player a concrete way to advance the parasite storyline.
  • Completing the quest can give Omeluum a later trader role and may affect future story encounters.
  • The Ring of Mind-Shielding is a defined reward connected directly to the parasite investigation.

Weaknesses

  • Omeluum's potion does not remove the tadpole.
  • The treatment strengthens the parasite instead of resolving the player's central problem.
  • The source material does not identify the new ability unlocked by the failed treatment.
  • The later effects of killing the githyanki or using specific interactions with Omeluum are not fully enumerated.

Best uses

  • Use the quest to connect the Ebonlake Grotto and Arcane Tower portions of an Underdark route.
  • Complete it when you want the Ring of Mind-Shielding and the later Omeluum-related progression.

Choices and consequencesSpoilers

  • Discuss the tadpole with Blurg

    Blurg introduces Omeluum and makes the parasite investigation available.

  • Provide Omeluum with the Tongue of Madness and Timmask Spores

    Omeluum prepares the potion used to test the parasite.

  • Proceed through the potion test

    The potion fails to remove the tadpole, unlocks a new ability, and strengthens the parasite.

    Spoiler
  • Accept Omeluum's Ring of Mind-Shielding

    The player receives the primary quest reward, which helps calm the parasite and protects the wearer from its influence.

    Spoiler
  • Complete the quest

    Omeluum can become a trader and the player gains the potential to encounter him again in Act 3.

    Spoiler
  • Kill the githyanki or interact with Omeluum in specific ways

    Later story developments can be affected, but the supplied source does not identify every qualifying interaction or its exact result.

    Spoiler

Checklist

  • Reach Ebonlake GrottoThis is the quest's stated starting location.
  • Speak with BlurgDiscuss the tadpole to trigger the introduction.
  • Meet OmeluumHear the investigation and ingredient request.
  • Obtain a Tongue of MadnessThe requested mushroom is found at the Arcane Tower.
  • Obtain Timmask SporesThe requested spores are found at the Arcane Tower.
  • Return both ingredients to OmeluumThe potion cannot be prepared until the requested items are returned.
  • Complete the potion testThe result is not a cure and strengthens the parasite.
  • Resolve the Ring of Mind-Shielding offerThe ring is the primary reward identified for the quest.
  • Account for later Omeluum progressionCompletion allows him to become a trader and may lead to an Act 3 encounter.

Collectibles and secrets

  • 01
    Tongue of Madness

    Where: Arcane Tower

    Omeluum requests this mushroom as one of the two ingredients needed for the potion test.

  • 02
    Timmask Spores

    Where: Arcane Tower

    Omeluum requests these spores as the second ingredient for the potion test.

  • 03
    Ring of Mind-Shielding

    Where: Omeluum's reward offer

    This is the primary reward after the investigation; it helps calm the parasite and protects the wearer from its influence.

RewardsSpoilers

  • Ring of Mind-Shielding
    Omeluum offers this ring after the potion fails to remove the tadpole. It helps calm the parasite and protects the wearer from its influence.
  • Omeluum as a trader
    Completing the quest allows Omeluum to become a trader.
  • Potential Act 3 encounter
    Completion opens the potential to encounter Omeluum again in Act 3.
  • New ability
    The failed potion test unlocks a new ability, but the supplied source does not name it.

AftermathSpoilers

The investigation produces a troubling result

Omeluum's potion does not remove the tadpole. Instead, it unlocks a new ability and strengthens the parasite; the Ring of Mind-Shielding is offered afterward as a way to help calm its influence. Completing the quest also changes Omeluum's later availability by allowing him to become a trader and opening the potential for an Act 3 encounter.

Trivia

  • Omeluum is introduced as a mind flayer who has broken free from the Elder Brain's control.
  • The quest connects Ebonlake Grotto with the nearby Arcane Tower through a request for two named ingredients.
  • The potion test is notable because it advances the parasite's capabilities instead of removing it.
  • The Ring of Mind-Shielding is both the quest's primary reward and a story-relevant response to the parasite's influence.
  • The source material describes later interaction consequences without providing a complete list of the affected choices.

Sources

Relationships

Characters

  • BlurgStarts throughBlurg introduces Omeluum after the player discusses the tadpole.
  • OmeluumInvestigatorOmeluum requests the ingredients and conducts the potion test.

Locations

  • Ebonlake GrottoBegins inThe Underdark settlement where the player speaks with Blurg and Omeluum.
  • Arcane TowerIngredient locationThe location of the Tongue of Madness and Timmask Spores requested by Omeluum.

Items

  • Ring of Mind-ShieldingPrimary rewardThe ring offered after the potion test fails to remove the tadpole.