The role of the oungan is believed by practitioners to be modelled on the lwa Loco, the chief of Legba's escorts. According to Vodou, Loco and his consort Ayizan were the first oungan and manbo, providing humanity with knowledge of the konnesans. The oungan and manbo are expected to display the power of second sight, something that is regarded as a gift from the creator deity that can be revealed to the individual through visions or dreams. Many priests and priestesses are often attributed fantastical powers in stories told about them, such as that they could spend several days underwater.