Pocket of Night
In the darkest places of Samaragd, the shadows have an unnatural weight, and no natural light can penetrate the darkness.
Effect: When creating magical light, a character in a pocket of night must make an ability check using his or her class’s primary ability score against a hard DC. On a failure, the magical light fails to illuminate anything; on a success, it casts only dim light.
Usage: Use a pocket of night with creatures that have darkvision and powers that take advantage of the concealment this terrain offers.
Published in The Plane Above, page(s) 87.