Mason's Guild

The main entrance to the Mason's Guild

Reithwin Town
Grand Mausoleum
↑
House of Healing	←	Mason's Guild
↓
Reithwin Tollhouse

The Mason's Guild is a Location within Reithwin Town in Act Two of Baldur's Gate 3.

Overview

The Mason's Guild can be found alongside the river and north of the Reithwin Tollhouse.

Korilla can briefly be seen spying on the party at the gates of the Mason's Guild. She teleports away quickly when the party gets too near to her. If the party members are fast enough, it is possible to trigger a brief and inconsequential dialogue.

Inside the main area of the guild is a pile of odd looking bones, declared by a plaque to be the bones of the grand mason. With a Perception check, a character can notice that they are a "A pile of crushed bones of varying shapes, sizes, and creatures". For  Guild Artisan characters, this will grant an inspiration point.

Mason's Guild Basement

The party can reach the Mason's Guild Basement in two ways. At X: -129 Y: 23, beneath the stairs, is a slightly obscured Ornate Wooden Hatch that leads to the basement. At X: -130 Y: 21 is a control wheel that services an elevator leading to the basement.

Inside the basement at X: 129 Y: -692 there is a Keyholed Herald ( DC 10 Perception check) that can be lockpicked (DC 18) to access an area with a trapped (DC 18) gilded chest. The Herald can also be opened with the Tower-Shaped Key from Mattis at the Last Light Inn

At the end of the hallway there is the Mason's Hall with some shadow enemies, five Shadows and a Wraith.

On the table is the Mason's Log, which completes the quest  Investigate the Selûnite Resistance. (AoE spells that include the mason's log may destroy it, stopping this optional part of the Selunite quest.)

Behind the altar is a trapped ( DC 15 Perception check) Gilded Chest (disarmed with DC 21 Sleight of Hand check, lockpicked with DC 14 Sleight of Hand check) which contains the Helmet of Arcane Acuity

At X: 120 Y: -734 there is a button ( DC 10 Perception check) which opens a secret door to an area with two heavy chests: one containing potions and one with scrolls (including Scroll of Knock). On a table nearby is a Moonrise Diagram, which marks a secret item stash in the Moonrise dungeon on the map.

Creatures

• Shadow
• Wraith

Quests

•  Investigate the Selûnite Resistance

Loot

• Infernal Iron - on the ground level, in the northeast near the iron ladder at X: -103 Y: 19
• Helmet of Arcane Acuity - in a chest behind an altar in the basement
• Mason's Log - in the basement at X: 108 Y: -748
• Moonrise Diagram -- in the basement at X: 120 Y: -734