In thunderhead keep the king mentions at the start that if you could find some of his 'folk' they could be could be useful, has anybody found them? where are they and is it worth getting them?
Yes, I did. I found them during the battle at the end, out the door to the left as you enter. Keep going out that door and turn left, then right, you'll find 3 or 4 guarded by 5 mursaat/jade.