Unexpected behavior with Keep Inventory Script?

game.Players.PlayerAdded:Connect(function(player)
	    local c = player.Character or player.CharacterAdded:Wait()
	    c.Humanoid.Died:Connect(function()
		btools = player.Backpack:GetChildren()
		ctools = c:FindFirstChildOfClass("Tool")
    end)

	    player.CharacterAdded:Connect(function()
		      for i, v in pairs(btools) do
			local clone = game.Lighting:WaitForChild(v.Name):Clone()
			clone.Parent = player.Backpack
				btools = {}
		end
		if ctools then
			local chartoolclone = game.Lighting:WaitForChild(ctools.Name):Clone()
			chartoolclone.Parent = player.Backpack
			ctools = nil
		end
    end)
end)

Btools and ctools are defined every time the player dies and are both set to nil after the tools get added. However, they appear to remain nil as this script only works properly once, and then the player spawns with an empty inventory. How can I make it so it retains the previous inventory before dying? (There are consumable items in the game, so it has to be the last state of the inventory).