The Mahakala of the Black Cloak, also known as Bernagchen, is a specific form of Mahakala in Tibetan Buddhism. This particular manifestation is highly revered and holds great significance in Tibetan religious practices. Mahakala of the Black Cloak is depicted as a wrathful deity with a fierce and intimidating appearance. He is usually depicted with two arms and is adorned with a black cloak that symbolizes his ability to absorb negative energies and obstacles. His primary hand gesture is the abhaya mudra, which represents protection and fearlessness.
This form of Mahakala is associated with the removal of obstacles, the protection of practitioners, and the destruction of ignorance and negative forces. Devotees often rely on the Mahakala of the Black Cloak for spiritual guidance and assistance on their path to enlightenment

.Iconography:
Mahakala of the Black Cloak is depicted with a fierce countenance and a dark complexion. He typically has two arms and is adorned with a black cloak symbolizing his ability to absorb negativity. He may hold various symbolic attributes, such as a vajra (thunderbolt) or a curved knife, representing the cutting through of ignorance and obstacles.

History:
The origin of Mahakala of the Black Cloak can be traced back to ancient Indian Buddhism. Over time, this deity became highly prominent in Tibetan Buddhism, particularly within the Kagyu and Gelug schools. He is considered a protector of the teachings and a guardian of practitioners.

Temples:
While specific temples dedicated solely to Mahakala of the Black Cloak may not exist, numerous Buddhist monasteries and temples in Nepal and other regions of the world include shrines or areas dedicated to Mahakala. Examples include Boudhanath Stupa, Swayambhunath Stupa, and Kopan Monastery in Nepal.

Benefits of practicing Mahakala:
Devotees believe that practicing Mahakala of the Black Cloak can bring protection from negative influences, removal of obstacles on the spiritual path, and the cultivation of inner strength and fearlessness. It is believed that sincere devotion and practice can lead to a closer connection with Mahakala and his blessings.

How to practice:
Practices related to Mahakala of the Black Cloak may include visualization, mantra recitation, and ritual offerings. Engaging in regular meditation and cultivating qualities such as compassion, wisdom, and ethical conduct are also important aspects of the practice.

Mantras of Mahakala:
The primary mantra associated with Mahakala is "OM BENZA MAHAKALA HUNG" or "OM BERNAGCHEN BENZA HUNG." Chanting this mantra is believed to invoke the power and blessings of Mahakala. Additionally, specific lineages or practices may have their own unique mantras associated with Mahakala.