Advantages as "Enchnatments" or artifacts?

[Jaware]

Oh, and I just thought of another piece that could go well with a cursed sword.

What if the sword gave you X skill with the weapon as long as you held it, or added say +X or X/2 to a cap of say 18 or so to their skill if they already have said skill.

That would make them more inclined to use it over a "normal" weapon. Cause they can use it, or they can use it better than a normal weapon. And then it has all these cool features attached to it.

And how would I make a skill X enchantment?

I want to say I read an article about turning skills to advantages in a pyramid article not to long ago...

Maybe that can be converted to money in some way similar to the other "points to money" from the striking str +2 or what have you?