You're right. It's actually a group with Necro, Alex Skolnick of Testament, Vinny Appice of Black Sabbath and Dio and Igor Cavalera of Sepultura. The band name is Circle of Tyrants, their only album thus far is self titled. It is a very kick ass album, I suggest everyone checks this out. More information http://www.roadrunnerrecords.com/blabbermouth.net/news.aspx?mode=Article&newsitemID=54757