It was quite a while before my time as well, darling.

Yes. It was a legendary city in what is called Biblical Times. To make a long, legendary story short, an attacking force used this horn to destroy a powerful city's walls and take it over.

There was some nonsense about God telling them, but it was simply an Artifact.

[She pauses, thinking.]

An Artifact, darling, is an ordinary object, such as that horn, which has unexplained properties.