Various polished wooden sticks ranging between nine and thirteen inches made from all sorts of trees from oak to weirwood lay before him. He took out two dark blue scales and a few pieces of obsidian from his pouch and placed them down on the leather. Jon had managed to pull off two of Winter's loose scales much to the dragon's displeasure. And with the dragonglass having properties of fire and earth elements it was technically possible to use it for a core.