No sooner had Entemena, the next king, ascended the throne than the flame of revolt burst forth again. The Patesi of Umma was evidently determined to free, once and for all, his native state from the yoke of Lagash. But he had gravely miscalculated the strength of the vigorous young ruler. Entemena inflicted upon the rebels a crushing defeat, and following up his success, entered the walled city and captured and slew the patesi. Then he took steps to stamp out the embers of revolt in Umma by appointing as its governor one of his own officials, named Ili, who was duly installed with great ceremony. Other military successes followed, including the sacking of Opis and Kish, which assured the supremacy of Lagash for many years. Entemena, with characteristic vigour, engaged himself during periods of peace in strengthening his city fortifications and in continuing the work of improving and developing the irrigation system. He lived in the golden age of Sumerian art, and to his reign belongs the exquisite silver vase of Lagash, which was taken from the Tello mound, and is now in the Louvre. This votive offering was placed by the king in the temple of Nin-Girsu. It is exquisitely shaped, and has a base of copper. The symbolic decorations include the lion-headed eagle, which was probably a form of the spring god of war and fertility, the lion, beloved by the Mother goddess, and deer and ibexes, which recall the mountain herds of Astarte. In the dedicatory inscription the king is referred to as a patesi, and the fact that the name of the high priest, Dudu, is given may be taken as an indication of the growing power of an aggressive priesthood. After a brilliant reign of twenty-nine years the king died, and was succeeded by his son, Enannatum II, who was the last ruler of Ur-Nina's line. An obscure period ensued. Apparently there had been a city revolt, which may have given the enemies of Lagash the desired opportunity to gather strength for the coming conflict. There is a reference to an Elamite raid which, although repulsed, may be regarded as proof of disturbed political conditions. One or two priests sat on the throne of Lagash in brief succession, and then arose to power the famous Urukagina, the first reformer in history. He began to rule as patesi, but afterwards styled himself king. What appears certain is that he was the leader of a great social upheaval, which received the support of a section of the priesthood, for he recorded that his elevation was due to the intercession of the god Nin-Girsu. Other deities, who were sons and daughters of Nin-Girsu and Nina, had been given recognition by his predecessors, and it is possible that the orthodox section of Lagash, and especially the agricultural classes, supported the new ruler in sweeping away innovations to which they were hostile.