I'm willing, back from a relatively long break and need something new to get my hands on.
I love worldbuilding so perfectly fine with working with you to make something nice. 
A few questions though:
What would be the prefered level of technology? (so are we talking Middle Ages or more advanced?)

How much of a fantasy aspect to you want to keep this in? So are we talking High fantasy/magic or Low with strict rules to them?

Will this be purely centered around the artefact or are we talking ASOIAF level of nation/family scheming?