A prophetic dream involved the possessor receiving visions of the past or future through dreaming while they slept. The visions typically appeared to the dreamer as a collection of images with distinct color hues. Each color carried a different significance for the prophet, with purple signaling that once that particular vision occurred, it was impossible to change the rest of the visions in the dream. As a result, the possessor could use their knowledge of the other colored visions to inform others of the potential future or change the future before it comes to pass.
Despite their power of foresight, the prophetic dream ability was largely uncontrollable and its content was seemingly random in nature. Likewise, the visions were often incomplete and given little to no context, making it possible to misinterpret the events being seen. Because the ability was unique to members of the Loop Octopus Clan and its descendants, no one outside the clan could learn the magic ability. However, if the body of a clan member were possessed by another individual, they would also be able to receive prophetic dreams.
- Elluka Clockworker commonly represents her visions as gears, describing a gear "locked" into place sets the other cogs in motion, making them unchangeable thereafter.
- Throughout the Evillious series, several characters claim to be "fortune tellers" that practice divination despite their "magic" actually being faked.
- According to a Levin archbishop, having prophetic dreams was an ability inherited from the gods that humans could be born with.