Shadow Dragon

A Shadow Dragon is the result of a dragon exposed to the dark magic of the Shadowfell for an extended period of time. The party fought one in the Iron Keep of Oman's Isle in the Moonshaes.

Description
The Shadow Dragon the party fought was a young dragon of Huge size - the Shadowfell's aura made it larger than normal. It's wings were made of shadow instead of leather, and it's breath attack shot necrotic flames.

Abilities
Physical Abilities

As with all dragons, the Shadow Dragon was strong, even after it's time in the Shadowfell. It had also gained new skills - due to it's new colouration, it could hide in the shadows easier, and was resistant to any necrotic damage.

Magical Abilities

The dragons breath weapon had been replaced with a necrotic variant, and it's bites were laced with similar death magic.

The shadows also protected it from harm - it was resistant to all but radiant damage.

History
During the various conflicts taking place over the islands (due to the barrier between planes being thinner there), the Shadow Dragon came through a portal into the Iron Keep on Oman's Isle, the central Moonshae Island. It killed the majority of the inhabitants, the remainder of which escaped to other islands.

King Derid tasked the party with ridding the Keep of the dragon. Upon entering, they found and were attacked by a group of black kobolds. Wether they came through with the dragon or were recruited afterwards is unclear.

The party happened upon the dragon while it was sleeping. As coming up with plans was taking to long, Fruben went up to it and hit it with his hammer. A fight ensued, with Daniel jumping on the dragon's back, only to be nearly crushed against the ceiling as it flew. Eventually they managed to kill it, looted it's horde, and left for their reward from the king.