The full-length trailer for ‘Oz: The Great and Powerful’ has been released.Sam Raimi’s action adventure chronicles the origin story of the Wizard of Oz is played by James Franco.Franco’s Oscar Diggs is a morally dubious circus magician who finds himself transported to the land of Oz, where he meets three witches played by Mila Kunis, Rachel Weisz and Michelle Williams.Diggs expects to find fame and fortune awaiting him in Oz, but the witches are unconvinced by his talent and he must fight to become both a better wizard and a better man. Digital Spy.