How would I do inverse-client for multiple events?

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#1

What I like to call an “inverse-client” is something that the server and all but 1 player see an action. Basically, the server executes a command, creates a part for example, and only the Player2 and Player3 see the part, while Player1 has no idea of that object.

With that known now, I have 2 questions to… ask:

  1. How would I actually do the example, without listening for DescendantAdded and make the part invisible, etc.?
  2. How would I play an animation on Player1's character, without them seeing it?
#2

You should get table containing all players and remove random player from it. Then you fires event for all players in this table.

local Players = game.Players:GetPlayers()
Players[math.random(1,#Players)]=nil
for _,Player in pairs(Players) do
event:FireClient(Player,...)
end
#3

I was thinking of a server-side module function that black-lists a player.
Unfortunately, it is harder than that. Anyway, what if I use functions instead of RemoteEvents? I just included the word event not meaning an Instance.

#4 
--CLIENT
local Players = game:GetService("Players")
local Player = Players.LocalPlayer
local Replicated = game:GetService("ReplicatedStorage")
local Remote = Replicated:WaitForChild("RemoteEvent")

Remote.OnClientEvent:Connect(function()
	local Part = Instance.new("Part")
	Part.Anchored = true
	Part.Parent = workspace
end)

Remote:FireServer()

--SERVER
local Players = game:GetService("Players")
local Replicated = game:GetService("ReplicatedStorage")
local Remote = Replicated.RemoteEvent

Remote.OnServerEvent:Connect(function(PlayerWhoFired)
	for _, Player in ipairs(Players:GetPlayers()) do
		if Player ~= PlayerWhoFired then
			Remote:FireClient(Player)
		end
	end
end)

Fairly simple example of how you can go about achieving this, a client fires the server which in turn fires every other client but the client which initially fired the server, then for each client which is fired, a BasePart is instanced, anchored and parented to the workspace.