Way, way far out in the wooded hills, there is a banderling camp. I hear that it's a hike northwest of the lifestone at the abandoned settlement. If you don't know of the settlement, travel west from Holtburg for quite some time. You'll probably find it, though it's a long way. One of the banderlings is said to sometimes carry fiery equipment. Don't try for it if you're still new to the world, though. Banderlings are tough!