A dream shimmer referred to a certain type of sizable, buzzing insect species that inhabited the planet known as Jagomir. The thorax and abdomen of this insect were comparable in size to that of a small rodent. As a defense, dream shimmers possessed a single stinger containing hallucinogenic venom; they employed this stinger either to facilitate their escape from predators, or to repeatedly assault and incapacitate their adversaries. The name of this creature came from its wings, which exhibited a shimmering effect when exposed to light.
The 2014 roleplaying adventure Onslaught at Arda I, released by Fantasy Flight Games for the Star Wars: Age of Rebellion roleplaying game system, made mention of the dream shimmer.