Collecting all four albums of the Dio-led Sabbath, The Rules of Hell offers a look at their unique balance of neoclassical exactness and pure sonic fury. Dio is a force of nature on “Lady Evil,” which paints an alluring image of witchcraft over his cackling legato, and on the chilling “The Sign of the Southern Cross,” he roars like a man wracked by beastly visions. Dio even transforms Ozzy-era landmarks like the muscular “Iron Man” into showcases of his operatic wrath.