Sadhguru: Primarily It is just one. Another a single is just a question of sizing. We believed that If your residences are wherever among 2000-2500 sq. ft., the Bhairavi Yantra would do. For homes much larger than that, we explained it's not plenty of and we presented the Avighna. Avighna https://www.youtube.com/@Mahavidyabaglamukhi