Runestone

Dragons are naturally greedy. It's a fact that Bryne absolutely hates, even if he is the same way.
Orphaned as a hatchling, Bryne has spent most of his life around, well, non-drgons. Most of his days consists of having a good time, figuring out how to survive, prank the unsuspecting citizen, running from the law, infuriating said law enforcers, food, more fun, more running, and the occasional break-in to his best friend's house. A normal life for a young dragon.
But not all good things last.
It's his instinctive drive to hoard treasure that makes Bryne pick up the dark stone, a few days after the heaviest storm of the season. Soon after, his friends start to notice that the normally outgoing dragon was changing. At first, he was only growing less and less talkative, until his eagerness left his eyes, and before anybody knew it, he'd shut them all out. His best friend's convinced the stone is the cause, and everybody sees no reason to doubt it.
Even so, the stakes are not known until one of their number is turned against them; ready to kill on sight. Suddenly, the group is faced with a bigger threat than they could have dreamed, and they suddenly know that, perhaps, they aren't quite as normal as they'd once thought.

**This is an old version of the story, and no longer to my standards. I'm leaving this up in the event that anyone does care to see this, but if I get to the point where I actively start posting the new version, this story will most likely get deleted.