Helm of Awe

The Helm of Awe or Helm of Terror (Old Norse: Ǿgishjalmr, Œgishjalmr; Icelandic: Ægishjálmur) is an Icelandic magical stave that used as a symbol worn by Vikings for invincibility. A physical object called "Helm of Terror" is referenced as one item Sigurðr takes from the dragon Fáfnir's hoard after he slays him in Vǫlsunga saga. Stanza 16 of Fáfnismál in the Poetic Edda also mentions:

":The Helm of Awe
 * I wore before the sons of men
 * In defense of my treasure;
 * Amongst all, I alone was strong,
 * I thought to myself,
 * For I found no power a match for my own."