Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
2 Normal Monsters Non-Effect Monsters you control gain 500 ATK, also all Effect Monsters your opponent controls lose 500 ATK. If this card in its owner's possession is destroyed by your opponent's card: You can target 1 non-Effect Monster in your GY; Special Summon it. You can only use this effect of "Defender of the Labyrinth" once per turn.
--冥宮の番人
--Defender of the Labyrinth
--Scripted by Eerie Code
local s,id=GetID()
function s.initial_effect(c)
	--link summon
	Link.AddProcedure(c,aux.FilterBoolFunctionEx(Card.IsType,TYPE_NORMAL),2,2)
	c:EnableReviveLimit()
	--atk/def
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_FIELD)
	e1:SetCode(EFFECT_UPDATE_ATTACK)
	e1:SetRange(LOCATION_MZONE)
	e1:SetTargetRange(LOCATION_MZONE,0)
	e1:SetTarget(aux.TargetBoolFunction(Card.IsNonEffectMonster))
	e1:SetValue(500)
	c:RegisterEffect(e1)
	local e3=e1:Clone()
	e3:SetTargetRange(0,LOCATION_MZONE)
	e3:SetTarget(aux.TargetBoolFunction(Card.IsType,TYPE_EFFECT))
	e3:SetValue(-500)
	c:RegisterEffect(e3)
	--tohand
	local e5=Effect.CreateEffect(c)
	e5:SetDescription(aux.Stringid(id,0))
	e5:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e5:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e5:SetProperty(EFFECT_FLAG_DELAY+EFFECT_FLAG_CARD_TARGET)
	e5:SetCode(EVENT_DESTROYED)
	e5:SetCountLimit(1,id)
	e5:SetCondition(s.spcon)
	e5:SetTarget(s.sptg)
	e5:SetOperation(s.spop)
	c:RegisterEffect(e5)
end
function s.spcon(e,tp,eg,ep,ev,re,r,rp)
	return (r&REASON_EFFECT+REASON_BATTLE)~=0 and rp==1-tp and e:GetHandler():IsPreviousControler(tp)
end
function s.spfilter(c,e,tp)
	return c:IsNonEffectMonster() and c:IsCanBeSpecialSummoned(e,0,tp,false,false)
end
function s.sptg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_GRAVE) and chkc:IsControler(tp) and s.spfilter(chkc,e,tp) end
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and Duel.IsExistingTarget(s.spfilter,tp,LOCATION_GRAVE,0,1,nil,e,tp) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local g=Duel.SelectTarget(tp,s.spfilter,tp,LOCATION_GRAVE,0,1,1,nil,e,tp)
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,g,1,0,0)
end
function s.spop(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc:IsRelateToEffect(e) then
		Duel.SpecialSummon(tc,0,tp,tp,false,false,POS_FACEUP)
	end
end