 Historians know very little about the Iranian culture under the Median dynasty, except that Zoroastrianism as well as a polytheistic religion was practiced, and a priestly caste called the Magi existed.Traditionally, the creator of the Median kingdom was one Deioces, who, according to Herodotus, reigned from 728 to 675 BCE and founded the Median capital Ecbatana(Hâgmatâna or modern Hamadan).Attempts have been made to associate Daiaukku, a local Zagros king mentioned in a cuneiform text as one of the captives deported to Assyria by Sargon II in 714 BCE, with the Deioces of Herodotus, but such an association is highly unlikely.