It is not, I think. Mystery behind the artifact can strengthen the magic behind it.

[ It's so weird to talk about his important possession as an artifact but that's what it is these days ]

Man, that really sounds complicated I guess. But that's how magic these days work. The world was made rational, unified in its logic and history. The unexplained, the unknown thus is made more powerful.

[ A beat ]

Say, are you a swordsman?

[ Just because of interest behind the blade ]