A type of Omni Georunes that would be supplied with magic inks and could automatically build spell scrolls. They found a lot of use in War Golems with enough space to have walking around in room. As Spell Ports cast a spell the Spell Cartridges could get returned internally. These used scrolls would get fed into a Scroll Writer which clears the old ink then uses a reservoir of magically charged ink to create new Spell Cartridges. Many of them required manual interaction to control which spells they were writing at a given time so to see optimal use in War Golems it was best if there was more crew than a single Golem Pilots.