Ancient Lair

The Ancient Lair in the Undercity Ruins

Undercity
		Ancient Lair	→	Undercity Ruins

The Ancient Lair is a Location within the Undercity in Act Three of Baldur's Gate 3. It is accessed through a passageway to the west of the Undercity Ruins waypoint.

Overview

Map of the Ancient Lair.

Main chamber

The main chamber is filled with chests surrounding an open sarcophagus. A hidden ( DC 10 Perception check) locked ( DC 20 Sleight of Hand check) door on the north wall opens to a second room. Opening any of the chests or looting the undead or unlocking the door to the Workshop (see below) triggers an ambush by a horde of undead. The party members are not  Surprised, but inflicted with the  Spell Rot curse (those with ties to undead, such as Astarion and wizards of Necromancy school do not receive this condition; climbing on the pillar in the north-western corner also removes spell rot temporarily). Spell rot causes each character to take 2d6Necrotic damage per spell level every time they cast a spell (cantrips, not being spells proper, do not trigger the curse). The curse is removed upon leaving the lair. While the curse can be removed by using  Remove Curse but only for three combat rounds (or 18 seconds out of combat) before it is re-applied.

If a party member is strong enough, it is possible to pick up at least one enemy before they awaken, which effectively removes them from combat. This triggers the rest of the undead to rise. It is advisable to prioritize Ancient Servants for this, as they are the most dangerous opponents in the room. The corpse can be disposed of later at the party's discretion.

Workshop

The locked ( DC 20 Sleight of Hand check) door hidden in the north wall can be revealed with a  Perception check. It leads to a workshop with a chopped up body and a dead half-elf. The Jar of Mystic Carrion's Brain is found on the central table, while Jar of Mystic Carrion's Liver is in the locked (DC 20) Gilded Chest. Destroying either of the jars will cause a large explosion dealing 8d6Fire damage. Reading the book Funerary Jar Form and Function on the nearby table, reveals Mystic Carrion has hidden his heart in ( Thrumbo).

A ladder to the north of the workshop leads back to the Undercity Ruins in a small previously inaccessible room north of the Bareki.

Connected locations

• Undercity Ruins

Creatures

• Ancient Servants
• Crawling Claws
• Greater Zombies

Related quests

•  Find Mystic Carrion's Servant
  •  End Mystic Carrion's Immortality

Notable loot

Notable items obtained in this location, whether looted, purchased, or obtained as a quest reward:

• Breaching Pikestaff
• Jar of Mystic Carrion's Brain
• Jar of Mystic Carrion's Liver