Forbidden books of ancient and mind-shredding knowledge - we know of some, and others elude us.

Whence this blasphemous leaf? This page of mad Latinate barbarism, illuminated with the image of a twisted and unwholesome Black Goat? Its provenance is mysterious, and yet it suggests the ravings of a Mad Monk. The inscription begins in decorous, if scrawled, prayer, and then descends into something abhorrent. Seekers of lost wisdom, lunatics in search of forbidden lore might greatly prize such an artifact!

But for a few pence you can print as many as your technology will tolerate, and use them as letterhead, wrapping paper, game accessories, wallpaper, semantic destabilizers, ritual burning tools, birdcage liners, et cetera.

The image will print as an A4 standard sheet, that's 8.5"x11", and I recommend finding a nice (or interestingly abused) paper stock, so as to present a more substantial object, when frightening neighbors or impressing cultists.