Question: Heritage of Satan is the ninth studio album by Czech black/heavy metal band Root and counts with many guest musicians, such as a Polish musician who was also a what?
Sentence (from "Heritage of Satan"): The album counts with many guest musicians, such as Erik Danielsson from Watain (who also provided its cover art), Nergal from Behemoth, and Blasphemer from Mayhem, Aura Noir and Ava Inferi.
Relevant evidence: Yes