ancient scandinavian pagan valknut, polygonal style

allfather amulet ancient asatru asgard barbarian celtic design divine emblem esoteric fantasy gothic heathen illustration legend magical mascot mythology nordic norse north occult odin ornaments pagan paganism ragnarok runes sacred scandinavia scandinavian shaman sign spiritual symbol talisman triangles triskele valhalla valknut vector viking warrior wicca wisdom wotan