Broken Hero Sword

Dropped from enemies on the surface during a "Solar Eclipse"

Broken Hero Sword is a Material, and as such cannot be used by itself offensively. The Broken Hero Sword has a 1 in 250 chance of dropping from either a Frankenstein or Swamp Thing.

Trivia
This may be a reference to the weapon choice of Dave Strider, a character from the webcomic Homestuck or Riven from the game League of Legends, who wields a broken sword as a weapon.