Answer:
I may seem real but it always turns out I was never there in the first place... you only see me during a certain resting stage.
I break down buildings, I crumble mountains but you can't see me. What am I?
I have a ring but no fingers. I used to stay still all the time but nowadays I follow you around.
I must be broken before you can use me.
When I point up, it's bright. When I point down, it's dark. What am I?
I break away from my pack. I create holes in my victims. I can travel for miles and then disappear. I am part of a dying breed. What am I?