Tyche.

In ancient Greek city cults, Tyche (Τύχη, meaning "luck" in Greek, Roman equivalent: Fortuna) was the presiding tutelary deity that governed the fortune and prosperity of a city, its destiny.
Increasingly during the Hellenistic period, cities venerated their own specific iconic version of Tyche, wearing a mural crown (a crown like the walls of the city).The Greek historian Polybius believed that when no cause can be discovered to events such as floods, drought or frosts then the cause of these events may be fairly attributed to Tyche. Tyche appears on many coins of the Hellenistic period in the three centuries before the Christian era, especially from cities in the Aegean. Unpredictable turns of fortune drive the complicated plotlines of Hellenistic Romances, such as Leucippe and Clitophon or Daphnis and Chloe. She experienced a resurgence in another era of uneasy change, the final days of publicly-sanctioned Paganism, between the late-fourth-century emperors Julian and Theodosius I who definitively closed the temples. The effectiveness of her capricious power even achieved respectability in philosophical circles during that generation, though among poets it was a commonplace to revile her for a fickle harlot.
In medieval art, she was depicted as carrying a cornucopia, an emblematic ship's rudder, and the wheel of fortune, or she may stand on the wheel, presiding over the entire circle of fate.
The constellation of Virgo is sometimes identified as the heavenly figure of Tyche, as well as other goddesses such as Demeter and Astraea.