There were some cards released in the early 90's with metal bands. Lots of crap bands (Poison,Cinderella
& Winger to name a few) but there are some Testament, Anthrax (Persistance in time era) and Megadeth (rust in peace) cards among them.
They also had some logo holograms (Anthrax,Megadeth,Slayer,Testament) in the same set (Of which I have some doubles of).
I agree with you on the Ozzy thing. I love Sabbath but could never get into his solo stuff.