"The Kali yantra is invoked when you are dealing with a major life crisis or trauma. It activates the latent code of Kali for the purpose of survival and mastery of an overwhelming situation....The mantra to guide your consciousness through the Kali yantra meditation is Om Kareeng Kalekaye Namah, which means “Salutations to Goddess Kali”."
January 1, 1970
https://en.wikiquote.org/wiki/Yantra