Create Soul Prism

With the help of the Create Soul Prism spell, a mage can transform a worm gem into a soul prism, which is capable of being used as a prison for powerful spirits. Originally, the prisms were used to power automatons, and therefore is central to creating new machines or repairing old ones.This spell was thought lost and is a secret of the mage Torrissio.

Without this spell, the Avatar will not be able to trap the Banes of Chaos.

Trivia

 * It is possible to accidentally use the unique scroll without transcribing it, creating an unsolvable situation.
 * This spell in not mentioned in the game's documentation.