Answer:
I cannot be burned in fire or drowned in water
I run up and down the stairs without moving
I am free the first time and second time but the third time is going to cost you money.
What can you catch but not throw?
To cross the water I'm the way. For water I'm above I touch it not and truth to say I neither swim nor move.
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.