Ísbrjótar

Ísbrjótar, also known as Īsbrehhan (or Īsąbrekan in older script), Icebreaker, is a legendary weapon, either a sword or an axe, brought by Berg Firstcomer from Lýðrjiord to Caemuth during his exodus.

Legends tell that the weapon was forged prior to the exodus, and that it had the ability to break the thickest ice. It is said that Berg freed a fleet of ships frozen in ice, and was able to leave Lýðrjiord with his people.

He brought this weapon to Caemuth, where he battled the Elves until captured by the latter. Ísbjrótar was hidden away, and its trace was lost since then. Even Berg himself failed to recover it.