"You spawn on a baseplate named ‘baseplate’. There is a 5 second countdown that show up on your screen every time you die. When the 5 second countdown ends, you get teleported to another baseplate named ‘arena’."

-- server script 
game.Players.PlayerAdded:Connect(function(player)
    player.CharacterAdded:Connect(function(character)
        character:WaitForChild("Humanoid").Died:Connect(function()
            local countdown = Instance.new("IntValue")
            countdown.Name = "Countdown"
            countdown.Value = 5
            countdown.Parent = player
            
            repeat
                wait(1)
                countdown.Value = countdown.Value - 1
            until countdown.Value == 0
            
            local arena = game.Workspace:FindFirstChild("arena")
            player.RespawnLocation = arena.SpawnLocation
            player:LoadCharacter()
        end)
    end)
end)

-- local script 
game.Players.LocalPlayer.ChildAdded:Connect(function(child)
    if child.Name == "Countdown" then
        local screenGui = Instance.new("ScreenGui")
        local textLabel = Instance.new("TextLabel")
        
        textLabel.Text = tostring(child.Value)
        textLabel.Size = UDim2.new(0, 200, 0, 50)
        textLabel.Position = UDim2.new(0.5, -100, 0.5, -25)
        textLabel.Parent = screenGui
        
        screenGui.Parent = game.Players.LocalPlayer:WaitForChild("PlayerGui")
        
        child.Changed:Connect(function()
            textLabel.Text = tostring(child.Value)
            
            if child.Value == 0 then
                screenGui:Destroy()
            end
        end)
    end
end)