He is prophesized to come as the end of Kaliyuga, at the hieght of peril and ego, when humanity is to be saved only by uprooting its evil through a final resolution. he is mentioned in the Vishnu, Matsya and Bhagva-ta Purana.
He rides a white horse with a fiery sword carrying us into
Satyuga. With rise in technology and the borderline devilish manifestations, this avatar is the symbol of a new beginning through a culmination.