Magic Boomerang

During the Gargoyle War in Ultima VI, the Gargoyles realized that their normal boomerangs weren't powerful enough to do any real damage. Thus, they developed this weapon, the Magic Boomerang. It is more precise and more powerful than a normal Boomerang, and can even fly through walls. Thankfully, the Avatar ended the war before these weapons were introduced to the battle field.

By the time of Ultima VII, the weapon has been nearly forgotten, with even the Gargoyles themselves having lost interest in it. Only a few Magic Boomerangs still exist. One is still in possession of the Gargoyles on Terfin. The only other one known to still exist is rumored to be in the Dungeon Despise near 2N 21E.

Trivia

 * Despite being so rare, the Magic Boomerang isn't especially powerful.