It is a artifact of machinery has a switch to operate it but in order to find the switch you have to roll a natural 20 plus have at least +1 on your perception check.

Once activated a light blue orb with be summoned and expand infinitely and destroy all matter in its way.

The pedestal where the orb is summoned can hold an object that is sphere in shape.

When putting the yuqr orb on the pedestal it turns the orb into the unbreakable yuqr stone