Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Target 2 face-up Xyz Monsters on the field; send both monsters to the GY, then Special Summon 1 Xyz Monster from your Extra Deck, except a "Number" monster, whose Rank is equal to, or 1 less than, the combined original Ranks of those 2 Xyz Monsters, and if you do, attach this card to it as material, also, for the rest of this turn after this card resolves, your opponent takes no damage.
--エクシーズ・ユニバース
--Xyz Universe
local s,id=GetID()
function s.initial_effect(c)
	--special summon
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_SPECIAL_SUMMON+CATEGORY_TOGRAVE)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetTarget(s.target)
	e1:SetOperation(s.operation)
	c:RegisterEffect(e1)
end
s.listed_series={SET_NUMBER}
function s.filter1(c,e,tp)
	return c:IsFaceup() and c:IsType(TYPE_XYZ)
		and Duel.IsExistingTarget(s.filter2,tp,LOCATION_MZONE,LOCATION_MZONE,1,c,e,tp,c,c:GetRank())
end
function s.filter2(c,e,tp,mc,rk)
	return c:IsFaceup() and c:IsType(TYPE_XYZ)
		and Duel.IsExistingMatchingCard(s.spfilter,tp,LOCATION_EXTRA,0,1,nil,e,tp,rk+c:GetRank(),Group.FromCards(c,mc))
end
function s.spfilter(c,e,tp,rk,sg)
	local crk=c:GetRank()
	return (crk==rk or crk==rk-1) and not c:IsSetCard(SET_NUMBER) and Duel.GetLocationCountFromEx(tp,tp,sg,c)>0 and c:IsCanBeSpecialSummoned(e,0,tp,false,false)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return false end
	if chk==0 then return e:IsHasType(EFFECT_TYPE_ACTIVATE)
		and Duel.IsExistingTarget(s.filter1,tp,LOCATION_MZONE,LOCATION_MZONE,1,nil,e,tp) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TOGRAVE)
	local g1=Duel.SelectTarget(tp,s.filter1,tp,LOCATION_MZONE,LOCATION_MZONE,1,1,nil,e,tp)
	local tc=g1:GetFirst()
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TOGRAVE)
	local g2=Duel.SelectTarget(tp,s.filter2,tp,LOCATION_MZONE,LOCATION_MZONE,1,1,tc,e,tp,tc,tc:GetRank())
	g1:Merge(g2)
	Duel.SetOperationInfo(0,CATEGORY_TOGRAVE,g1,2,0,0)
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_EXTRA)
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	--change damage
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_FIELD)
	e1:SetCode(EFFECT_CHANGE_DAMAGE)
	e1:SetProperty(EFFECT_FLAG_PLAYER_TARGET)
	e1:SetTargetRange(0,1)
	e1:SetValue(0)
	e1:SetReset(RESET_PHASE|PHASE_END)
	Duel.RegisterEffect(e1,tp)
	local e2=e1:Clone()
	e2:SetCode(EFFECT_NO_EFFECT_DAMAGE)
	e2:SetReset(RESET_PHASE|PHASE_END)
	Duel.RegisterEffect(e2,tp)
	--sp_summon
	local g=Duel.GetChainInfo(0,CHAININFO_TARGET_CARDS)
	local tc1=g:GetFirst()
	local tc2=g:GetNext()
	if not tc1:IsRelateToEffect(e) or not tc2:IsRelateToEffect(e) then return end
	Duel.SendtoGrave(g,REASON_EFFECT)
	local og=Duel.GetOperatedGroup()
	if og:FilterCount(Card.IsLocation,nil,LOCATION_GRAVE)<2 then return end
	local sg=Duel.GetMatchingGroup(s.spfilter,tp,LOCATION_EXTRA,0,nil,e,tp,tc1:GetRank()+tc2:GetRank())
	if #sg==0 then return end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local ssg=sg:Select(tp,1,1,nil)
	local sc=ssg:GetFirst()
	if sc then
		Duel.SpecialSummon(sc,0,tp,tp,false,false,POS_FACEUP)
		if c:IsRelateToEffect(e) then
			c:CancelToGrave()
			Duel.Overlay(sc,c)
		end
	end
end