The old mound of stone in the middle of town was always a bit of a mystery. Nobody really knew its purpose, or why it was there, but everyone knew that for whatever reason, it shouldn't be disturbed. Old, worn-down enchantments were carved into the paths around it, no longer maintained and having long since ceased function.
One day, a young child ran over to it. A few half-heartedly tried to stop them, but before anyone knew what was happening, they'd climbed atop the stone mound and were posing triumphantly. A moment later, the mound began to stir.
As the child ran off, frightened, the stone began to shake off decades' worth of moss and lichens, taking on a shape it had been sealed from by now defunct enchantments. Four powerful limbs followed by a pair of wings, a long neck topped by a head crowned with horns and with a snout at the front. It began to take on more detail, forming scales, crystalline structures growing from its underbelly to form more of them. Eyes opened on its head, and its maw opened in a slow yawn before it began to speak.
"Mmmn.... well, that was quite a nap..."