From the author's website:
What is A Most Pernicious Pamphlet?
It is an A5, 17 page staple-bound booklet on my old school rpg campaign setting, Pernicious Albion. It’s all insane angel conspiracies, occult aristocracy, revenant Romans, tennis with vampires, evil couture, Ars Goetia, royal spawning pits, realpolitik, light homoeroticism, and lakes of human teeth, but for now, you get the pamphlet, which contains
- two ruleset-agnostic classes: the vampire and the warlock
- modifications to the cleric and the magic-user
- three supernatual patrons with tables for motivations, goals, and methods
- equipment, services, weapons, and armor tables designed for new characters in eerie fairy tale settings
- Esoteric languages