The Pebble Shiner is a building that makes the Pebbles resource. Clicking on it when it has stored any Pebbles will bank it, so that you can use it. As you upgrade it, the capacity of Pebbles it can hold increases, as well as the rate of production. When an enemy monster destroys this building, the attacker will receive a specific amount of pebble, depending on the level of the Pebble Shiner.