How to make a quickly rotating tornado?

Okay. Well I want to make a tornado that damages you if you get too close. I want it to do it quickly and it also sets whatever is near it to explode and fly around it. I only know the spinning code and the code to insert an object into a player:

while wait() do
	script.Parent.Rotation = Vector3.new(0,0,0) --Changed to 0,0,0 for purposes..
end