Answer:
Do what he says and you'll be fine, don't and you lose the game.
I'm light as a feather, yet the strongest man can't hold me for more than 5 minutes.
Thirty white horses on a red hill, first they champ, then they stamp, then they stand still.
I weaken all men for hours each day. I show you strange visions while you are away. I take you by night, by day take you back. None suffer to have me, but do from my lack.
I have one door and five rooms what am i
I repeat only the last word you say. The more I repeat, the softer I got. I cannot be seen but can be heard. What am I?