neon helm of awe aegishjalmur or egishjalmur galdrastav red color image flat style

neon helm awe aegishjalmur symbol sign egishjalmur odin fear amulet nordic rune pagan viking norse vegvisir talisman protection witchcraft thor magical danger knotwork military scary gapaldur old ancient scandinavian culture celtic mystic knot evil shield warrior occult rock mystical skull charm magic contour outline line red color vector illustration image