How do i make a text button invisible when you clicked it?

I've recently got this script and i want to make the text button be invisible after you clicked the text button, and when the player dies i want it to appear again.

local player = game.Players.LocalPlayer
local tool = game.ReplicatedStorage.Sword

script.Parent.MouseButton1Down:connect(function()
    if player:FindFirstChild("Backpack") then
        tool:Clone().Parent = player.Backpack
    end
end)