Lunar Fog

Lunar Fog is an environmental hazard that naturally occurs in Zarthura-- especially within the territories of the Lunar Highlands and the Vale of Twilight. Lunar Fog in and of itself isn't terribly dangerous, but prolonged or concentrated exposure to Lunar Fog can lead to contracting the Blossoming Curse.

Visibility

As with normal fog, Lunar Fog imposes a circumstance penalty to visual Perception checks, depending on the thickness.

Fatigue

Exposure to Lunar Fog causes most creatures to experience discomfort and fatigue, reducing the time it takes for characters to become Fatigued from overland travel to only 4 hours.

Temperature

Lunar Fog causes the environment to feel colder than usual. Characters treat the temperature of areas within Lunar Fog as one step colder than normal (mild to severe, severe to extreme; see temperature chart for details). Appropriate cold-weather gear can negate this effect.

Blossoming Curse

One of the known methods of contracting the Blossoming Curse is a result of regular overexposure to Lunar Fog. Any creature who has spent more than 1 month in an environment saturated with Lunar Fog must make a save against becoming afflicted with the Blossoming Curse; your GM may ask you to make this check sooner if your circumstances would meaningfully increase your risk.