Script 1 (Roblox Nausea Effect)

--local script in StarterGui
local cam = workspace.CurrentCamera

local nausea = require(game:GetService("ReplicatedStorage"):WaitForChild("Nausea"))

--The 4 lines below just delay the start of the effect to make sure the character is there

local players =  game:GetService("Players")

local player = players.LocalPlayer

local character = plr.Character or plr.CharacterAdded:Wait()

local rootpart = char:WaitForChild("HumanoidRootPart")


--Effect starts here
nausea:Start(cam, 5, 0.1)