The blessings of Maa Baglamukhi develop a divine protective protect in the form of an aura about someone therefore shielding him/her from malefic energies in the form of black magic spells or evil eye. Another etymology indicates that valga usually means "to paralyze" and symbolizes the strength of stambhana, "paralysis" https://www.youtube.com/shorts/5VeSyP9JRw0