Part 175: Mariage SorcièreA witches' alliance formed by Lady Maria (the Witch of Origins) and Lady Beatrice (the Endless Witch). The two of them created a groundbreaking new system of magic, thereby granting Beatrice - whose magical power had begun to decline - immense new magical power.
You could probably say that it was through the formation of this alliance that Beatrice gained the Endless Power in the true sense.
Article 1 requires members to accept each other as witches and respect each other's magic. At one point, young Ange was invited into the alliance, but she was later excommunicated.