BG3 Githyanki Creche Guide: Complete Crèche Y'llek Walkthrough

Entering the Crèche

Mountain Pass → Rosymorn Monastery. Enter through the main door or a side window. The crèche is in the basement through a hidden hallway.

Key Events in Order

1. The Zaith’isk (Purification Device)

Lae’zel sits in the Zaith’isk. Three saves (Arcana/WIS): pass all 3 for the Awakened buff (Illithid powers cost Bonus Action instead of Action). Let Lae’zel stay for her story.

2. The Inquisitor (Captain’s Quarters)

The githyanki captain interrogates you about the artefact. Refuse to hand it over → fight. Tough battle. Inquisitor casts Hold Person. Kill him for the Githyanki Barrier Disruptor key.

3. Vlaakith’s Chamber

Beyond the captain’s quarters. Vlaakith (the Lich Queen herself) appears via projection. She commands you to enter the Astral Prism. Enter it. Meet the Dream Visitor. Major story revelations.

Blood of Lathander

The legendary mace hidden beneath the monastery.

Steps

1. Find 4 ceremonial weapons around the monastery: Ceremonial Battleaxe, Longsword, Warhammer, Rusty Mace
2. Place them on Dawnmaster pedestals (stained glass room)
3. Take the Dawnmaster’s Crest
4. Descend to the secret chamber under the monastery
5. Insert the Crest into the pedestal BEFORE taking the mace
6. Take the Blood of Lathander safely