The Shade Isle Campaign
Pechs are a class of sprite, like pixies and nixies. Pechs are earth-sprites: physically, the resemble gnomes, but with gentler features, smaller noses, and very long and pointed ears. Their skin isn’t just the color of rock: it almost looks like it is rock; and their eyes appear as uncut gemstones.
Pechs appear to be incapable of speaking the tongues of mortals; when they speak, they open their mouths and a sound like pebbles sliding down a hillside comes out. Legend says that they are the guardians to the doorway between the mortal realm and the world of Faerie.
Whatever magical powers pechs may possess, the adventuring company has witnessed one power at least: the power to control stone. When touched by a pech, solid stone can be shaped like clay, or even made to flow like water.