Changer

It was a bluish-green-tinted crystal, no bigger than a tennis ball, and it had the power to change things. Although it couldn't change reality, it could change a specific person's physical and mental states. All one had to do was hold the crystal in their hand and concentrate on that person, then will something about them to change. The only drawback was that the person holding the crystal couldn't change themselves. The crystal sat there in the grass, waiting for someone to pick it up and use it. And this particular morning, someone did. Quickly, the person learned how they could use the crystal to their benefit ... or pleasure.