My sword? My sword?!! Madam, I'll have you know this is no mere sword to be tossed out windows! This is fabled Fimbuldraugr, the Whispering Spirit! The Ghost of the End of All Times! 
History
Fimbuldraugr is the fabled long sword of Asgardian manufacture used as the primary weapon of Fandral the Dashing of the Warriors Three.[1]