How do you make a throwable football so when it touches a player it will kill it?

Why won't it work?

function Throw()
if Football.MouseButton1Click then
Play animation(Throw)
Football.anchored = false
Football.workspace.CFrame
Football.CFrame.new(-6, 0.59, 10)
end
end
while true do
Football.anchored = false
Football.inStarterPack = true
end
if Football.onTouch.Humanoid then
Humanoid.Health = 0

Not working if you can help thanks!Oh and one more thing.Does this need to be in a localscript?