Infernaeon
The release features guest vocals by Dave Brockie ( Oderus Urungus ) of Gwar on the band's cover of Metallica's "Creeping Death" , and guest vocals by Erik Rutan ( Morbid Angel/Hate Eternal ) on "Legacy of Cain" . 
<triplet> Creeping Death <subj> Metallica <obj> performer <triplet> Erik Rutan <subj> Hate Eternal <obj> member of <triplet> Hate Eternal <subj> Erik Rutan <obj> has part