A good number of believers from the faith disappeared without a trace on Myers Mainland. Under the leadership of Baudelaire, all of them left Myers Mainland. The core members among them had even followed Saleen to the edge of the chaotic void. Some of the younger children were scattered throughout the many subcontinent planes.
The children were raised worshipping Saleen the great mage from young, before embracing the faith of the Goddess of Myers. After they were all spirited away from Myers Mainland, they began to embrace the faith of magic in earnest.
What Saleen did t had never been attempted by mages before him. Ancient mages were powerful and had no need for such methods. The children would believe in magic in earnest after they grew up, and they would have an easy time learning magic. The people who lacked talent would make excellent enchanters.