Numeroastro Maha Sudarshan Gold Plated Brass Yantra (Pack of 1) (8 Cms)-Maha Sudarshan Yantra Gold Plated This is a protective yantra. Sudarshan yantra refers to the discuss of Vishnu, weapon to repel and punish evil, it is created from the pure flame of the Sun. This dynamic yantra is used to destroy enemies. God Vishnu is known as protector of this universe therefore this yantra has protective power. Mantra for this Yantra :- "Om Namo Narayanaya Namah".