No one is doing what Ultha is doing, in black metal or otherwise. This is one of my few reviews where no reasonable comparator can be named, and I can confidently say that this is as original a work as you will find. This is transcendent black metal, and about one of the only albums where I can say that the songs - lengthy as they are - are not long enough. If you like this, check out Lenience by Det Eviga Leendet, which shares some similarities in riffing, but is more intense and faster.
Favorite track: the night took her right before my eyes.