It is probably for this reason that he is considered an infallible archer and his arrows can cause death or health to human beings. As a consequence of this he is considered the protector of medicine. Moreover, he was also the god of the prophecy; a large number of sanctuaries, where people went to consult oracles, were dedicated to him. He was depicted as a beautiful young boy, a good god and a supporter of moral laws. Nevertheless, he did not hesitate to avenge himself when Marsia challenged him to a music competition. Apoll hung him on a tree and skinned him alive and made two donkey's ears grow on the umpire Midas.