The Term Sudarshana which means “Su” correct or right, “Darshana” means vision. It is the mighty weapon in the form of disc of Lord Sriman Narayana, this weapon holds in his right hand and uses it for the protection of the righteousness and destruction of the vicious. Maha Sudarshana Homam is most powerful, mighty in strength and is believed to be righter than 1000 sun’s radiance and light put together. This chakra has many auspicious attributes connected with it. It is the powerful protection shield for those who stick to the Dharma & the Lord.
Lord Sudarshana is the appraise as one of the powerful indication of Lord Vishnu and you can see the Lord Maha Vishnu holding the Sudarshana Chakra on his right hand, it is a powerful weapon rarely used. In Tamil he is known as Chakarath Aalwar. Maha Sudarshana Homam is most powerful and it protects one from their enemies and removes evil drishti thereby providing relief all your problems.
Sudarshan Havan Puja is done by invoking Lord Sudarshana followed by reciting mantras and then gaining the blessing of Lord Sudarshana.