Like Weapons, they have a tier system as well, with Greater Runestones providing a larger effect than it's regular and Lesser counterparts. You'll be able to find Runestones by defeating Enemies, in chests, or by asking a blacksmith to craft one if you have the correct diagram unlocked. There https://pacific-drive-gameplay40504.pointblog.net/a-regra-de-2-minutos-para-thewitcher3-83351521