Dream Lore

Percentiles of this skill represent a character’s relative knowledge of the Dreamlands. Dream Lore allows the character to know something about a specific Dreamlands location, remember a point of Dreamlands history, recognize a Dreamlands creature, or identify particular entities as belonging to or not belonging to the Cthulhu Mythos— presumably such beings and creatures are completely alien in nature.
A new skill, Dream Lore has a base chance equal to half the investigator’s Cthulhu Mythos skill (round down). For every two points of increased Cthulhu Mythos skill, the investigator’s Dream Lore increases by one point, whether or not the increase occurs in or has directly to do with the Dreamlands. Dream Lore also increases through experience checks, like any other skill.