It really captures the entire essence of the album, while giving the story a sense of closure (which was part of the reason I felt Abigail II was kind of redundant, especially since Funeral takes place after The Black Horsemen), with one of the most beautiful, triumphant solos I have ever heard. I have literally spent hours at a time just listening to the last minute and a half of that song
I can only think of a handful of songs/albums that ends off with such a climax. Satan's Fall is definitely one of them. The way the entire song keeps building up, then reaches the eye of the storm (Innocent Lovers), then completely erupts with pure, yet controlled chaos (with probably the tightest rhythms I have ever heard), and finally culminates with the intro riff.
Light Of Day, Day Of Darkness, and Tomorrow's Eve's last album also deserve mention for that.