Forbidden Psalm: Medieval Marginalia

Concept: “From the margins of ancient lore come forth horrors to
twist your mind and burn your eyes.”
Content: A menagerie of misbegotten marginalia and their mischievous meddlings. 
Writing: Hilariously unpredictable marginalia burn down the house.
Art/design: Simple and restrained design to showcase gorgeously dreamlike miniatures.
Usability: Strong illustrations in a consistent layout aid rule reference.