The Blessings of Maa Baglamukhi make a divine protective shield in the shape of an aura about someone therefore safeguarding him/her from malefic energies in the shape of black magic spells or evil eye. Yet another etymology indicates that valga implies "to paralyze" and symbolizes the power of stambhana, "paralysis" https://www.youtube.com/shorts/5VeSyP9JRw0