Answer:
A shimmering field that reaches far. Yet it has no tracks, And is crossed without paths.
I run around the city, but I never move.
When the horse strokes the cat, the wood begins to sing.
I dig out tiny caves and store gold and silver in them. I also build bridges of silver and make crowns of gold. They are the smallest you could imagine. Sooner or later everybody needs my help. Yet many people are afraid to let me help them.
A dragon's tooth in a mortal's hand, I kill, I maim, I divide the land.
If lightning strikes an orchestra who is the one most likely to get hit?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?