From Pathfinder Season of Ghosts Hardcover Compilation, which isn't enabled.

Calm and Centered

FEAT 8

Prerequisites master in Occultism

Your occult connection to the world helps you deal with being Frightened or Stupefied. When your frightened or stupefied condition values would decrease, decrease the value by 2.

Pathfinder Season of Ghosts Hardcover CompilationORC