The so-called Prince of F--king Darkness is riding off into the sunset. Ozzy Osbourne announced on Wednesday that he will play his final show ever. The all-day event will feature an impressive roster of artists and the original lineup of Black Sabbath , to give the 76-year-old a proper sendoff. It will mark the first time in 20 years that Osbourne, Tony Iommi, Geezer Butler, and Bill Ward of Black Sabbath will perform together, when they take the stage for the Back to ...