Sigils. That was the Jotun’s term for runes. Their shamans were adept at carving runes into rocks and using them as a source of magic. Jotun were fairly ritualistic and followed the advice of the shamans. The chieftain was often the head shaman or their greatest warrior. It was rare for a warrior to be chieftain as the head shaman was often the smartest one and was referred to for leadership.