Icelandic magical staves (sigils); Ægishjálmur.
Helm of awe; to induce fear and to protect against abuse of power. aegishjalmur aegishjalmur、Helm of awe、Religious Symbol、Ægishjálmur aegishjalmur、敬畏的掌舵、宗教符號、Г†gishjámur 資料來源:openclipart ( https://openclipart.org/ )