Umskiptar (Old Norse for Metamorphosis) is the ninth studio album by the Norwegian one-man band Burzum, released on 21 May 2012 through Byelobog Productions.

SputnikMusic's Kyle Ward described the album's style as "an odd bastardization of the usual black metal sound".

[6] "Níðhöggr" finds Vikernes whispering over field recordings, a bass drum and a "distant, wobbly tone".

[7] The vocals are buried "between sheets of black-metal guitar screech" on the track "Heiðr", while "Valgaldr" is described as "an eight-minute bog in which he wraps ghoulish harmonies around distorted riffs", with a sound compared to "Iron Maiden on Thorazine".

Metal Storm's staff critic Troy Killjoy wrote: "Rather than beautifully composed epic melodious black metal anthems, encouraging atmospheric tales of fantasy and historical wars, or even the traditional grim and frostbitten stylings of the second wave (of which Burzum was a significant part), Varg presents the world with his least imaginative work to date – even taking Dauði Baldrs into consideration".