Answer:
Vikings use this for warmth.
A house with two occupants, sometimes one, rarely three. Break the walls, eat the boarders, then throw away me.
My first master has four legs, my second master has two. My first I serve in life, my second I serve in death. Tough I am, yet soft beside. Against ladies cheeks I often reside.
Green arrows grow out of my sides. I go from yellow to white. My babies fly in the wind. What am I?
I cannot be other than what I am, until the man who made me dies. Power and glory will fall to me finally. Only when he last closes his eyes.
I can only be played on a windy day