A shovel digs

When you give your players a magic shovel, you shouldn't have to tell them what it does. It's primary function is not to hit monsters with. It's primary function is to dig. When they dig with it, your players should get immediate feedback. It digs(!): deep fast portals rainbows oil fountains water wells dirt automatons swarms of bugs hidden treasure hidden bodies secrets lava mud fountains dungeon entrances moats ankhegs quick mud land sharks purple worms pocket pits