Nyth (creature)

Nyths were creatures very similar to will-o'-wisps and the two species could communicate and were been known to ally with each other. Nyths were often mistaken for wisps but some northern barbarians could supposedly tell the two apart, naming nyths "wildfire" and thinking them to be evil spirits. Nyths had a slightly wider range of coloration than wisps.

Biology
Nyths had a natural ability to shoot magic missiles from their bodies and, while could can extinguish their glow like a wisp, they preferred to hide in the light of the sun.

Nyths reproduced by absorbing fire or lightning energy. Such energy healed a nyth and when a certain amount of that energy was absorbed they would into two separate nyths. This process caused an explosion of light and sent a multitude of magic missiles flying in random directions.

The Nyths' affinity with magic missiles went even further, as they were immune to damage from missiles cast at them by other creatures and they reflected them back at whoever manifested them. Nyths were also immune to any effect that influenced the minds of creatures due to their completely alien thought processes and were completely silent unless speaking.

History
People in Faerun learned to avoid nyths, who would avoid them in turn. But during the Rat Hills Conflagration of 1367 DR, guard patrols from Waterdeep spotted a group of will-o'-wisps and nyths and engaged them. The fire caused the nyths to reproduce exponentially and the explosions of magic missiles killed two of the Waterdhavians.

As of 1372 DR there was believed to be four nyths still in the Rat Hills but many, many more in Ardeep Forest.

Diet
Nyths did not feed upon negative emotions as wisps did, but instead ate their prey like most predators.

Habitats
In Northwest Faerûn, nyths were known to dwell within the Mere of Dead Men, the Rat Hills, and Ardeep Forest.

Relationships
Nyths were sometimes recruited as guardians, as they took great pride in defending their homes against specified intruders.