The blessings of Maa Baglamukhi develop a divine protecting defend in the form of an aura about somebody therefore protecting him/her from malefic energies in the shape of black magic spells or evil eye. A further etymology indicates that valga suggests "to paralyze" and symbolizes the power of stambhana, "paralysis" https://www.youtube.com/shorts/5VeSyP9JRw0