Confront the Elder Brain

Confront the Elder Brain is a quest in Chapter Three of Baldur's Gate 3.

Objectives

Follow the Chosen to Baldur's Gate.

• We can thwart the Chosen of the Dead Three by taking control of the elder brain - but will we use that control to liberate or to conquer? ** * Whatever the answer, it lies in Baldur's Gate.

Obtain the three Netherstones.

• We have finally arrived in Baldur's Gate. To face the elder brain, we must obtain the Netherstones from the three Chosen. We already have Ketheric's Netherstone.
• We have obtained Orin's Netherstone.
• We have obtained Gortash's Netherstone.

Meet Gortash at the Morphic Pool.

• We made a deal with Gortash. He is waiting for us under the city at the Morphic Pool, where the elder brain feeds.

Face the elder brain.

• The elder brain killed Gortash and we took his Netherstone.
• With all three Netherstones in our possession, it is time to go to the Morphic Pool and face the elder brain. We should head to the sewers.
• The time has come to face the elder brain.

Talk to the Emperor.

• We tried to dominate the elder brain, but it has become too powerful to submit to orders. The Emperor might know what went wrong.

Get a mind flayer on your side.

• We drove the Emperor away - it has joined sides with what we now know to be a Netherbrain.
• We struck a deal with Raphael. He will give us the Orphic Hammer to free Orpheus - our last chance to defeat the Netherbrain - and, in exchange, we will give him the Crown of Karsus when we triumph.
• We have freed Orpheus from the globe of domination.
• We learned that only a mind flayer will be capable of wielding the stones to dominate what we now know to be a Netherbrain.

Face the Netherbrain again.

• We have become illithid. We should now be able to dominate the Netherbrain.
• Orpheus has become a mind flayer. We should now be able to dominate the Netherbrain.
• Karlach has become a mind flayer. We should now be able to dominate the Netherbrain.
• We gave the Netherstones to the Emperor. We should now be able to dominate the Netherbrain.
• The Emperor gave us a Supreme Tadpole, which will transform whomever consumes it into a mind flayer. If we are to defeat the Netherbrain, we must have a mind flayer on our side.

Get to the Netherbrain.

• The Netherbrain has made its way to the High Hall. We are going to have to fight or sneak our way through to reach it.
• We reached the brain stem. It's time to climb up and end this once and for all.
• We made the ultimate sacrifice and became illithid. We should now be able to control the Crown once we reach the Netherbrain.
• Karlach made the ultimate sacrifice and became a mind flayer. We should now be able to control the Crown once we reach the Netherbrain.
• The Netherbrain has made its way to the High Hall. We are going to have to fight or sneak our way through to reach it.

Reach the Crown of Karsus.

• The Crown sits atop the Netherbrain, sending out an intense, pulsing aura. It's now or never: we must take control of the Crown of Karsus.
• Karlach made the ultimate sacrifice and became a mind flayer. We need to help her so she can cast Karsus' Compulsion on the Crown.
• We made the ultimate sacrifice and became illithid. We need to cast Karsus' Compulsion on the Crown.

Enter the portal to the Netherbrain's psyche.

• We successfully cast Karsus' Compulsion and can now enter what looks to be the Netherbrain's psyche manifested as a plane of existence.

Bring the Netherbrain to heel.

• We're in the mind of the Netherbrain, where its unbreakable will is manifested in physical form. If we can break it, we can bring the Netherbrain to heel.

Quest Complete

• We conquered our parasites, defeated the Netherbrain, and took control of our own destinies. We did it. We won. We won!

Allies in the Final Fight

Ally Powers

Ally	Benefit
Weavewalker	One must remove all obstacles to follow one's destiny - Arabella's favour grants affected entities benefits of Freedom of Movement.
Fetcher's Favour	Equipped with Mol's tricks of the trade, affected entities can cast Rays of Fire, reduce all Fire damage by 5 and gain an additional 1d4 to Charisma Checks and Saving Throws.
Volo's Guide to Monsters	With steadfast application of knowledge from Volo's preeminent work, affected entities gain +2 to Attack Rolls, Saving Throws, and Ability Checks.
Spirit of the Land	The reunited soul of Thaniel provides a +1 to all Ability Scores and an additional 2m movement speed to all affected entities.
Rallied	Add 30 HP
Orphic Favour	While within 18m of Prince Orpheus, the affected entity has Resistance to Psychic damage and a +3 bonus to Intelligence, Wisdom, and Charisma Saving Throws.
An Apple a Day	Summon Zlorb - a shapeshifting monstrosity that can adopt the aspect of several monsters and beasts.
Battle-Ready Owlbear	Summon your owlbear cub - all grown up and ready to rage - in full armour.
Hellstalker Yurgir	Summon Yurgir the orthon - a deadly combatant at range or in melee who can become Invisible immediately after attacking.
Sword of the Silverlight	Summon Dame Aylin, Selune's shining paladin, to join your side in battle.
Balm of the Moonmaiden	Call upon Isobel to offer a furtive prayer to Selune, healing up to 6 nearby allies.
The Watch	Summon some of the City Watch's great weapon fighters to protect their home.
Hellrider Platoon	Summon Zevlor's Hellriders to Smite foes and support frontline allies.
Guildmaster Keene's Fixers	Summon two elite assassin mercenaries from the Guild's ranks.
Zhentarim
Silver Harp Squadron	Summon elite Harper archers to provide ranged support from your back ranks.
Gur Huntwards	Summon Gur monster hunters to hinder enemies while slipping in and out of the frontlines.
Vampire Lord Astarion
Ironhand Grenadiers	Summon the Ironhand Gnomes to damage and debilitate with thrown grenades.
Florrick's Cohort	Summon Florrick's personal guard - highly defensive warriors who can hold their own in melee.
Rolan's Firestorm	Damage: 20-120. Call upon Rolan, freed from the limitations of Lorroakan, to unleash a fiery barrage from the heights of Ramazith's Tower.
Lorroakan
Kith'raki Inferno	Damage: 12-72. Command the red dragon of Supreme Kith'rak Voss to breathe a wall of fire onto the battlefield.
Mizora, Agent of Avernus
Viconia
Dark Justiciar Shadowheart
Bhaal's Slayer
Hag