This is probably the boons for which Bagalamukhi's devotees worship her. Other Mahavidya goddesses are also claimed to stand for identical powers handy for defeating enemies, being invoked by their worshippers by various rituals. One more etymology implies that valga usually means "to paralyze" and symbolizes the power of stambhana, https://www.youtube.com/@Mahavidyabaglamukhi