Ozzy Osbourne and Ronnie James Dio both pulled off legendary comebacks that reshaped heavy metal history. After being fired from Black Sabbath many thought Ozzy was finished but with Randy Rhoads he created Blizzard of Ozz and cemented himself as the Prince of Darkness. On the other side Dio stepped into Sabbath and delivered Heaven and Hell giving the band a new identity before launching his own solo career with songs like Holy Diver. Both artists turned setbacks into triumphs but which second