Kali - Mahavidya

Kali stands on Shiva

Kali is one of the Mahavidyas. Krishna avatar of Vishnu is portrayed at the bottom.

Image of Satguru Sivaya Subramuniyaswami
One who performs japa properly will realize what he knows. You see, japa opens up the inner mind and focuses the energies of certain chakras, which are consciousness encased within the psychic nerve ganglia of the nadi network.
—Gurudeva