How do I make a tool regenerate after a robloxian has taken it, and that robloxian can't take it again?!

local clone = script.Parent.Torch:Clone(999999999999999999)
while true do wait(120)
	local g = script.Parent:findFirstChild("School Book")
	if g ~= nil then

	else
		local o = clone:Clone()
		o.Parent = script.Parent
		o:MakeJoints()
	end
end
Anonymous