Answer:
Bury deep, Pile on stones, My mind will always Dig up them bones
A dragon's tooth in a mortal's hand, I kill, I maim, I divide the land.
In we go, out we go. All around and in a row. Always, always steady flow. When we'll stop, you'll never known. In we go, out we go.
It's a game played by serious people that takes place on a global scale.
Thirty white horses on a red hill, first they champ, then they stamp, then they stand still.
People take me on walks and I run and have fun. What am I?