Aniseya's coven possessed a power considered by some to be dark, which eventually led to the coven being forced into hiding on Brendok by 148 BBY.
In the same year, twin sisters Verosha and Mae-ho Aniseya were to partake in a ritual called the Rite of Ascension, which had not been performed since the coven's exile. The ritual was interrupted when four Jedi arrived at the coven's fortress, concerned that the witches were training children. Initially, the coven attempted to hide the twins, and claimed they had no children with them. However, the Jedi soon learned of the two young girls, prompting one of the witches to attack the Jedi, until a truce was agreed to. Verosha expressed interest in becoming a Jedi, who then requested to test the twins.
The coven agreed that the girls should purposefully fail the Jedi's test. When the Jedi saw through this plan, Verosha was convinced to tell the truth and take the test honestly. This frustrated Mae-ho, leading to her stealing her sister's journal and setting fire to it. The fire soon grew in size, and began burning the doorway to Verosha's room. After escaping through a hatch, she came to a large room with a generator, which soon exploded. Verosha then found herself confronted by Mae-ho on a broken bridge. The bridge collapsed, but Jedi Master Sol caught Verosha as she fell. As the two exited the fortress, the bodies of several witches, including Mother Aniseya herself, were strewn across the floor.
Aniseya's coven had a distinct view of the Force, which they referred to as "the Thread." According to Aniseya, The Thread was not something to be used or wielded. Rather, it served as a connection between all living things, and as something that tied one to their destiny. The Thread was called upon by the coven during the Rite of Ascension.
The Thread was depicted as a cooperative and additive power, with more users working together being capable of stronger feats, such as a pair of witches being able to actively resist a telekinetic push that knocked away a single one. They admitted that their powers were classed as dark side and one of their powers was to break the mind and hold a Force-user helpless and on the edge of insanity.