Not only does it include "Saturn Devouring His Son" twice, it also includes: "Heads in a Landscape", "Witches Sabbath", "Two Old Men", and "Man Mocked by Two Women"... twice! That's 33.3% of the Black Paintings!
Not only does it feature every Black Painting, it’s also directly inspired by the Black Paintings, and has figures from the painting appear as characters!