Level: Very easyCreate a North Germanic Ásatrúan in the character creator that has the "Witch" trait, high learning, high diplomacy, and at least 3 adult children. Immediately convert three of your children or 50% if you created more than 3 to witchcraft using the "Convert to Witchcraft" scheme, then take the "Found Witch Coven" decision.
Credit to
Bayek von Kuwaq on Steam for his
guide.