Warthur
Blizzard Beasts saw Demonaz' last album as the band's lead guitarists, before the onset of tendonitis forced him to step down as a performing member of the band. (It speaks a lot to the friendship between him and Abbath that Demonaz is still considered a full band member, penning all the lyrics.) It's interesting to ponder what direction the band's music might have taken had Demonaz not been forced to step down, because Blizzard Beasts finds them moving in the direction of death metal - in particular, some of the guitar solos put me in mind of Morbid Angel, and Abbath's vocals drift towards death metal grunts instead of black metal shrieks at more than one point.
To be honest, the end result isn't a stellar example of blackened death metal (or deathened black metal), so I'm inclined to say this is one of the less essential Immortal releases, but at the same time it's an entertaining (if brief) listen and I'm not sorry I own it.