The screams of the changeling would cause the Mamuna to feel sorry for her own offspring. She would emerge from the swamp to reclaim her child and return the human baby unharmed. Proper Names in Translation - The Official Witcher Wiki
Changelings were described as having highly disproportionate bodies, massive or incredibly tiny heads, huge abdomens, and a highly aggressive or uncontrollable temperament. mamuny
According to ancient Slavic traditions, there are specific methods to keep a Mamuna away from your nursery: The screams of the changeling would cause the