[Suzerain of Sheol]

I'd consider The Art of War literature.

And,

Stygian gramarye, etched with blasphemy,
Whorls and verticils, black with baleful spells,
Vespertine conjurings, doomsayer's prophecy,
Pellucid lotus-dreams, spawn of the elder fiends,
Cryptic halls, squamous mass, malevolent diabolist,
Black desire, nighted woe, shunned and forbidden tome,
Brooding dark, deepest night, ritual, abhorrent sight,
Whispering malignity, hearken to the summoning! -- Six Score and Ten Oblations to a Malefic Avatar, Byron Roberts