When the planetary situation just isn't very good as part of your horoscope or The celebrities are not inside your favor then this puja is most powerful. Nav Chandi yagya is The mix of 1000 mantras which might be exported variety Markandeya Purana. In Markandeya Purana, there are different mantras https://www.youtube.com/watch?v=QIX0JZlLsgE