3-level Conjuration (ritual)
From the pool of knowledge that defines one's being, the caster uses a part of themselves to create and manifest a new artificial soul in a sealed container.
At higher levels: With each subsequent spell level, the manifested soul takes 1 more hour to cast, and produces a greater, more valuable soul. These are: Simple, Unrefined, Refined, Superior, and Masterful, from 3rd to 7th level. Each subsequent level is more valuable, and can be used to animate increasingly impressive things.