Matangi yantra / Matang Dev yantra Benefits from Rudraksha Ratna

Lord Shiva is also known as Matang. His Shakti (power) is called Matangi. Her complexion is dark and possesses a moon on her forehead. The three-eyed goddess is seated on the crown decorated with jewels. Her lustre is like a blue lotus and is destroyer of the demons (forest) like a fire. In each of her four hands, she has a noose, a mace, an axe and a hook. She is a destroyer of the demons by enchanting them first with her beauty and a fulfiller of every desire of her devotees.

She is worshipped for the attainment of great powers, power of speech, happiness in family life etc. Goddess of the Spoken Word, outward articulation of inner knowledge, all forms of art, music and dance. Good for gaining wisdom and knowledge. Excellent for students, teachers, lecturers, researchers, musicians, singers, performers, dancers, actors, writers, poets, designers, artists and those in artistic or creative fields.

Matangi is the Dark One, a form of Saraswati, incarnated as the daughter of Matang Rishi. He was from the lowest caste known as Chandal, but did not believe in the orthodox caste system and wanted to achieve brahminhood through his karma. Through worship of first Indra and then Saraswati, she became his daughter and was unequaled in her intellect (mati). Thus Matang Rishi gained a reputation to which only brahmins were entitled. Matangi is one of the ten Mahavidyas - the others are Kali, Tara, Shodashi, Bhuvaneshwari, Bhairavi, Chinnamasta, Kamala, Dhumavati and Bagla Mukhi. The Mahavidyas represent some or other incarnation or manifestation of the Divine Mother. They are in this sense also to be regarded as Vidyas or different approaches to (tantric) knowledge. Matangi resides in the throat chakra and is radiant like the Moon. Matangi is an adviser of Tripur Sundari and het worship leads the aspirant to Tripur Sundari. Matangi is invoked to achieve command over speech, creativity and knowledge, among others.

First purify your body and start with a clear and positive mind frame 
Find a place on the floor facing east, where you will be undisturbed. 
Light the incense or diya. (It does not matter how many you light). 
Lay a fresh flower and a fresh fruit on the altar. 
Open the Yantra and place it along with the image of the deity of yantra and your isht God. 
Take the water with any leaf from any tree and sprinkle the water on yourself followed by sprinkling the water on the Yantra.
Then purify your soul and surrender yourself completely in devotion to God and chant 21 times the mantra. 
Close your eyes and concentrate on the deity to bless you with wishes. Now with all sincerity, ask God to grant you the desire of your life that you wanted to be fulfilled in your own language.

Associations Mantra
Represents: Goddess Matangi Om Hreem Kleem Hoom Matangyey Hum Phat Swaha
Purpose: for the attainment of great powers and happiness in family life