Lævateinn
In Norse mythology, Lævateinn is a weapon crafted by Loki mentioned in the Poetic Edda poem Fjölsvinnsmál. The name Lævateinn does not appear in the original manuscript reading, but is an emendation from Hævateinn made by Sophus Bugge and others.
The weapon is needed to slay the rooster Viðofnir atop the Mímameiðr tree in order for the seeker to achieve his quest, or so replies the wise porter Fjölsviðr, the titular character of the poem.
Lævateinn has variously been asserted to be a dart (or some projectile weapon), or a sword, or a wand, by different commentators and translators. It is glossed as literally meaning a "wand" causing damage by several sources, yet some of these same sources claim simultaneously that the name is a kenning for sword. Others prefer to regard it as a magic wand (seiðr staff), can be considered the mistletoe dart that killed Baldur.