Shadow dragon

Continent: Tapa

Shadow dragons are evil true dragons.
Description Physically seeming insubstantial, shadow dragons had dark and translucent scales which helped them camouflage into the darkness around them. Shadow dragons are often mistaken for black dragons, but their horns are pointed backward. A long fringe of spines emerged from the back of a dragon's neck and its powerful tail featured a swimming fin. An average shadow dragon was 20 ft - 30 ft in length.
A dragon egg could be identified as that of a shadow dragon by the purple tinge seen when held in front of an intense white light, though it shared this trait with deep dragon and amethyst dragon eggs.
Personality Shadow dragons eclipsed even red dragons in their mental capabilities and are on par with gold dragons, the smartest of the dragons.
Biology Shadow dragons are physically weak compared to other dragons. For example even at great wyrm stage shadow dragons were, in regards of raw physical strength, below a white dragon, the weakest of the chromatic dragons, at the same stage.
They have a frightful presence like other dragons and a number of abilities that allowed them to be stealthy and also to move fast. Starting with a predisposition towards mundane hiding, sneaking and jumping. They aren't exactly fast flyers but could move unusually fast on feet for dragons.
Shadow dragons are related to three drow offshots. A special form of half-shadow dragon, zekyl, shadow draconic drow, zar'ithra, and the draa'zekyl or drow-dragon.
Senses Like any other true dragon, shadow dragons have sharp hearing and sight, which was capable of low-light vision and darkvision. They also have blindsense.
Breath A shadow dragon's breath has a cone of shadows. Creatures caught in it lost parts of their vitality, skills and spells, possibly permanently, all while temporarily empowering the dragon. They could train their breath weapon to turn those they killed with it into spectral creatures who were then permanently enslaved by the shadow dragon.
Abilities Shadow dragons learned an increasing number of magical abilities to hide from enemies and movement. They could hide away into shadows and learned over its ages to cast mirror image, dimension door; nondetection and shadow walk.
Once at great wyrm stage, they could fill a large area with darkness. Once this ability was used, a battle was in danger of becoming a one sided matter in favor of the shadow dragon. The darkness was impossible to disperse with light, magical or not. Creatures without ties to the Plane of Shadow are practically blind as long as they remained in the area that encompassed a radius of 100 yards. Those with ties to the plane were largely unaffected. This ability was usable multiple times.
Defensive A shadow dragon has very strong spell resistances and very hard scales. As it grew, it gained an increasingly stronger resistance against spells and non magical physical attacks. Their scales are hard even among dragons and grew only harder with age. All shadow dragons owned an outright immunity against life sapping effects.
Magic Like many other true dragons, they developed sorcerer abilities with at least the potential to learn spells usually only open to divine casters as well as from the chaos, evil and trickery domain.