Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Cannot be Normal Summoned/Set. Must be Special Summoned by "Silent Magician LV4" and cannot be Special Summoned by other ways. Unaffected by your opponent's Spell effects.
--サイレント・マジシャン LV8
--Silent Magician LV8
local s,id=GetID()
function s.initial_effect(c)
	c:EnableReviveLimit()
	--cannot special summon
	local e1=Effect.CreateEffect(c)
	e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE+EFFECT_FLAG_UNCOPYABLE)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetCode(EFFECT_SPSUMMON_CONDITION)
	e1:SetValue(aux.FALSE)
	c:RegisterEffect(e1)
	--immune spell
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_SINGLE)
	e2:SetCode(EFFECT_IMMUNE_EFFECT)
	e2:SetProperty(EFFECT_FLAG_SINGLE_RANGE)
	e2:SetRange(LOCATION_MZONE)
	e2:SetValue(s.efilter)
	c:RegisterEffect(e2)
end
s.LVnum=8
s.LVset=SET_SILENT_MAGICIAN
function s.efilter(e,te)
	return te:IsSpellEffect() and te:GetOwnerPlayer()~=e:GetHandlerPlayer()
end