Answer:
Though I wander the earth, I am no longer here. I am pale and I chill everyone near. Who am I?
A doctor might remove one from the neck of a Dracula victim.
What is bought by the yard by is worn by the foot?
Thirty white horses on a red hill, first they champ, then they stamp, then they stand still.
They try to beat me, they try in vain. And when I win, I end the pain.
All about, but cannot be seen, Can be captured, cannot be held, No throat, but can be heard. Who am I?