I was able to make a few Vision's Foe in the demo so it's not an artifact; though I can't remember offhand the exact sphere(s) you needed in order to create it. Probably Air/Earth.

It and the other crossbows with a high precision works almost too well with attack orders of "large monster" to waste those precious Ice Devils and Behemoths.

I don't know if it's too well for the cost or not; since my only MP experiance with it are on my end using it against others.