Call of Cthulhu Mythos spells

Mythos spells are not a resource an investigator spends — they are something learned, and the learning is the cost. Each of these names what it does, what casting takes (magic points, Sanity, and occasionally considerably worse), and what a Keeper should ask for when a player reaches for it. They are written to be found inside a tome rather than picked at character creation, and to be a bad idea most of the times they are used.

Brew your own spell →