The Witches of Dankmar

The Witches of Dankmar From Faerie (WW 1015) For Realm of Power : Faerie, Infernal or Magic Are they a societas, a tradition or a Mystery Cult ? What are their powers ? What for theis Chants ?

Ex Misc lineage in 5th ed. Dankmar is briefly discussed in Guardians of the Forests.