Could it be a periodic thing to keep the “childrens” number down so they don’t attract too much attention to them selves?
Makes a kind of FUCKED UP sense though…send one off and make sure he is part of the mundane,normal world and that he will feel the need to protect that world and then exile one and make him a misfit and be sure he HATES the establishment/mundane world.
Eventually the “savior” will kill off enough of the children and presumably the king and find himself starting a new “family”
Circle of life BITCHES