The Blessings of Maa Baglamukhi make a divine protective protect in the shape of an aura all-around someone therefore safeguarding him/her from malefic energies in the form of black magic spells or evil eye. A further etymology indicates that valga implies "to paralyze" and symbolizes the strength of stambhana, "paralysis" https://www.youtube.com/shorts/5VeSyP9JRw0