One of the brooms can be found close to the Atronach Forge. You must choose at least a great soul gem, however it doesn't have to be filled. You can choose any type of a soul gem and it doesn't have to be filled. You can find the core while exploring dwarven (dwemer) ruins. You can't perform this action until you've placed a sigil stone on the pedestal. MATERIALS (you can place them in the box in any order you want) Assuming you've done everything according to the plan you'll then successfully summon an object or a creature. Once you've put all the required items in the offering box (you may also pick them up again if you've made a mistake) you must close the inventory window and pull a nearby lever (seen on the screen above).
