Caligene Dragons have long been considered omens of death—reinforced by the skeletal markings on their bodies. They exert a malignant force on the world around them, causing other living things to slowly waste away in their presence. Caligenes favor the seasons of summer and autumn, disappearing entirely from the forests they inhabit during winter and spring. These malevolent dragons are physically weak, though this is countered by their natural stealthiness and alarming speed—enabling them to close in on large targets quickly and silently to create ambushes from which prey cannot escape.

Dragons are highly-intelligent reptilian creatures that—from a human perspective, at least—appear to live forever. Many different varieties of dragon exist, each with their own unique qualities, habitats, and behavior. Adolescence in dragons is usually marked by the growth of a hatchling’s wings, although not all breeds of dragons grow wings and some breeds have other traits that indicate the beginning of maturation. In Galsreim, dragons and humans coexist peacefully.

In the twilight hours of summer, and fall, the forest grows ill as this creature's toxic presence weaves itself through the darkening shadows. Lurking just beyond sight, she'll follow unsuspecting victims with hushed footfalls for hours on end. Her thirst for the blood of woodland trespassers is restrained only by gruelling amount of patience she has. Sometimes she'll follow an encroacher for days, completely undetected as she plots of all the terrible ways she can rid her forest of the distasteful vermin. Few survive their encounters with the Mistress, and those who do usually aren't aware of it.