After confronting the Githyanki in Crèche Y’llek, Queen Vlaakith will ask you to enter the Astral Prism and kill the Dream Visitor—a Guardian that has been protecting you.
If Lae’zel, is in your party, she vows to kill you if you do not listen to Queen Vlaakith. This makes for a rough decision to be made begging the question, should you even enter the Astral Prism?
Should you enter the Astral Prism in Baldur’s Gate 3?
Yes, you should enter the Astral Prism. If you don’t, Lae’zel will attack you for disobeying her queen and leave your party.
You do not have to commit to killing the Dream Visitor. You’ll be able to decide once inside and can convince Lae’zel that Queen Vlaakith is lying about the Dream Visitor (which she is) to keep her on your side.
Whichever choice you choose, the Gith’yanki will be turned against you and you and your party will have to fight them all.
Should you kill the Dream Visitor in the Astral Prism?
If you decide to try to kill the Dream Visitor in the Astral Prism, you’ll quickly realize it isn’t possible.
The Dream Visitor will heal themselves, tell you you’ve failed their test, and express their disappointment. This isn’t ideal since it hurts your relationship with them.
If you decide to side with the Dream Visitor, they’ll trust you more, which will improve your relationship with them. They’ll also tell you how and why Queen Vlaakith is lying, and after the conversation, you’ll be able to convince Lae’zel that what the Dream Visitor says is the truth and keep her in your party.