2 Nature

Pick or roll for the artifact's nature: a mundane item, a strange material, the tether for a spirit or sentience, etc.

Each result on the nature table points to another table, or set of tables, to determine its characteristics. Pick from or roll on these sub-tables as well. Then follow their instructions (which might send you to other characteristics, to its form, etc.).

I roll a 3 for this artifact's nature, so it's a mundane item. That directs me to the why they might care table, where I get a 6: "it's inherently valuable—silver, trade goods, etc. (Value 2)." That then directs me to pick or roll for its form.