helm of awe aegishjalmur or egishjalmur galdrastav icon black color in circle round flat style image

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