"A page taken from a book. It appears to contain a kind of summoning ritual and one other spell."
The Torn Page is an item found in Prisoners of the Elder One. It is located in the Doll Room, taken off Vicky after trapping her with the Hair Pin, and is used to summon the Transfigurative Orb in the Nexus Crypt (avoiding the Doll Life Ending). Interestingly, while the spell is obviously magical, it is not considered a Magical Material, and is instead categorized as a Nature Material, perhaps due to it being on paper.