Book of Shadows
The Book of Shadows was a compendium written by Gethzerion . It served as the spiritual basis of the Nightsisters' society on Dathomir.
When she founded the Nightsisters of Dathomir, Mother Gethzerion told her flock that the Book of Law, the moral guide of the original Witches of Dathomir, had been created after Allya had become old and weak. To replace it, Gethzerion began writing her own volume of learning, known as the Book of Shadows. It contained details on the spells and rituals she had created for the Nightsisters.
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