Answer:
What flares up and does a lot of good, and when it dies is just a piece of wood?
When Iām metal or wood, I help you get home. When Iām flesh and Iām blood, In the darkness I roam.
I turn around once. What is out will not get in. I turn around again. What is in will not get out.
The eight of us move forth and back. To protect our king from the foes attack.
A dragons tooth in a mortals hand, I kill, I maim, I divide the land.
People take me on walks and I run and have fun. What am I?