You can make something like this:
local NumberOfRE = nil
local RE = game.ReplicatedStorage
while NumberOfRE do
if NumberOfRE > 2 then --
NumberOfRE = 0
end
wait(5)
NumberOfRE = 0 or NumberOfRE + 1
RE = RE[NumberOfRE]
if game.ReplicatedStorage:FindFirstChild(RE)then
RE:FireServer()
end
end
Then simply put this in a ServerScript