A range of monsters with game characteristics and evocative artwork.
Call of Cthulhu Keeper Decks are designed to provide in-game resources,
handy references, and information. Use the Malleus Monstrorum Deck when
you need to reference a monster profile and when designing scenarios and
encounters. These decks provide new layers to plots, enhance the story,
and provide quick access to an array of fiendish foes.