Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Special Summon 1 "Labrynth" monster from your hand, Deck, or GY, then return 1 monster you control to the hand. You can banish this card from your GY, then target 1 Fiend monster you control, or, if you control a Level 8 or higher Fiend monster, you can target 1 card your opponent controls instead; return that card to the hand. You can only use 1 "Big Welcome Labrynth" effect per turn, and only once that turn.
--ビッグウェルカム・ラビュリンス
--Big Welcome Labrynth
--Scripted by Hatter
local s,id=GetID()
function s.initial_effect(c)
	--Special Summon 1 "Labrynth" monster
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_SPECIAL_SUMMON+CATEGORY_TOHAND)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetCountLimit(1,id)
	e1:SetHintTiming(0,TIMINGS_CHECK_MONSTER_E|TIMING_MAIN_END)
	e1:SetTarget(s.sptg)
	e1:SetOperation(s.spop)
	c:RegisterEffect(e1)
	--Return 1 Fiend monster to the hand
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,1))
	e2:SetCategory(CATEGORY_TOHAND)
	e2:SetType(EFFECT_TYPE_QUICK_O)
	e2:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e2:SetCode(EVENT_FREE_CHAIN)
	e2:SetRange(LOCATION_GRAVE)
	e2:SetCountLimit(1,id)
	e2:SetHintTiming(0,TIMINGS_CHECK_MONSTER_E|TIMING_MAIN_END)
	e2:SetCost(Cost.SelfBanish)
	e2:SetTarget(s.thtg)
	e2:SetOperation(s.thop)
	c:RegisterEffect(e2)
end
s.listed_series={SET_LABRYNTH}
function s.spfilter(c,e,tp)
	return c:IsSetCard(SET_LABRYNTH) and c:IsCanBeSpecialSummoned(e,0,tp,false,false)
end
function s.sptg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0 and Duel.IsPlayerCanSendtoHand(tp)
		and Duel.IsExistingMatchingCard(s.spfilter,tp,LOCATION_HAND|LOCATION_DECK|LOCATION_GRAVE,0,1,nil,e,tp) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_HAND|LOCATION_DECK|LOCATION_GRAVE)
	Duel.SetOperationInfo(0,CATEGORY_TOHAND,nil,1,tp,LOCATION_MZONE)
end
function s.spop(e,tp,eg,ep,ev,re,r,rp)
	if Duel.GetLocationCount(tp,LOCATION_MZONE)>0 then
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
		local g=Duel.SelectMatchingCard(tp,aux.NecroValleyFilter(s.spfilter),tp,LOCATION_HAND|LOCATION_DECK|LOCATION_GRAVE,0,1,1,nil,e,tp)
		if #g>0 and Duel.SpecialSummon(g,0,tp,tp,false,false,POS_FACEUP)>0 then
			Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_RTOHAND)
			local hg=Duel.SelectMatchingCard(tp,Card.IsAbleToHand,tp,LOCATION_MZONE,0,1,1,nil)
			if #hg>0 then
				Duel.HintSelection(hg,true)
				Duel.BreakEffect()
				Duel.SendtoHand(hg,nil,REASON_EFFECT)
			end
		end
	end
	aux.WelcomeLabrynthTrapDestroyOperation(e,tp)
end
function s.thfilter(c,tp,fnd_chk)
	if not c:IsAbleToHand() then return false end
	if c:IsControler(1-tp) then return fnd_chk end
	return c:IsFaceup() and c:IsRace(RACE_FIEND)
end
function s.fndfilter(c)
	return c:IsFaceup() and c:IsLevelAbove(8) and c:IsRace(RACE_FIEND)
end
function s.thtg(e,tp,eg,ep,ev,re,r,rp,chk)
	local fnd_chk=Duel.IsExistingMatchingCard(s.fndfilter,tp,LOCATION_MZONE,0,1,nil)
	if chkc then return s.thfilter(chkc,tp,fnd_chk) end
	if chk==0 then return Duel.IsExistingTarget(s.thfilter,tp,LOCATION_MZONE,LOCATION_ONFIELD,1,nil,tp,fnd_chk) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_RTOHAND)
	local g=Duel.SelectTarget(tp,s.thfilter,tp,LOCATION_MZONE,LOCATION_ONFIELD,1,1,nil,tp,fnd_chk)
	Duel.SetOperationInfo(0,CATEGORY_TOHAND,g,1,0,0)
end
function s.thop(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc:IsRelateToEffect(e) then
		Duel.SendtoHand(tc,nil,REASON_EFFECT)
	end
end