"Miscellaneous item"@en . . . "The Grimoire of Pestilential Thought is an item in Planescape: Torment. A codex of sorts, the book is full of long-forgotten knowledge meant to empower its user. Its use, however, comes at a cost."@en . . "Grimoire of Pestilential Thought"@en . "5000"^^ . "Mantuok's Book"@en . . "40"^^ . "2.0"^^ . "The Grimoire of Pestilential Thought is an item in Planescape: Torment. A codex of sorts, the book is full of long-forgotten knowledge meant to empower its user. Its use, however, comes at a cost."@en . . .