Luca the Hunter
Luca the Hunter will teach you how to focus. He will teach you the Focusing Skills which allows you to learn a variety of useful Skills. Luca also teaches the Brawling Skill, which improves your unarmed combat. It is currently not very powerful but will maybe be upgraded later.
Luca is located east from the Soul Menhir in Tulimshar, just follow the dirt path to the east. You'll pass by Elanore, then Cyndala. When the path forks, travel north a short distance. Luca is on your right, standing on a cobblestone square surrounded by blue warrior banners.
You can find the script here.