Answer:
I work when I play and play when I work
A dragons tooth in a mortals hand I kill I maim I divide the land.
I beam, I shine, I sparkle white. I'll brighten the day with a single light. I'll charm and enchant all. I'll bring the best in you all. What am I?
I'm not a bird, but I can fly through the sky. I'm not a river, but I'm full of water. What am I?
I am always around you but often forgotten. I am pure and clean most time but occasionally rotten.
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.