What Became of the Architect?

There seems to be four more threads of the sun yet to be untangled, and Illezra is the one who has control over Vahmalkea. Guessing from the voices of Martha Kiyen NPC Knowledge and Lafi Bedmountain NPC Knowledge crying out to "save them," the founder of this place must still be alive.

On the other hand, Yaz found out how the threads work, after a moment of mumbling to herself. Yaz tells Lafi Bedmountain NPC Knowledge that it's a secret when he asks her how she found out.