Answer:
If you look, you cannot see me. And if you see me, you cannot see anything else. I can make anything you want happen, but later everything goes back to normal. What am I?
What is always in front of you but can't be seen?
What is seen in the middle of March and April that cannot be seen at the beginning or end of either month?
I direct you from outer space.
I can go through glass without breaking it.
It flows out of the soil, It burns you if it boils, And holds us in its coils, More valuable than gold, As black as it is old.