The Missionaria Protectiva is a part of the Bene Gesserit responsible for inputting seeds of superstition in primitive cultures for future control. Realizing they would need the support of many cultures, the Bene Gesserit created the Missionaria Protectiva to help steer cultures in favor of the matriarchal order. The Missionaries Protectiva used a simple method of going to a primitive planet and using the people's religion to sow myths in a great future. The Bene Gesserit used the Missionaria Protectiva to sow the seeds of a messiah into the Fremen culture.