Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
You can Ritual Summon this card with any "Nekroz" Ritual Spell Card. Must be Ritual Summoned, without using "Nekroz of Catastor". You can discard this card, then target 1 "Nekroz" monster in your GY; Special Summon it. You can only use this effect of "Nekroz of Catastor" once per turn. At the start of the Damage Step, if a "Nekroz" monster you control battles an opponent's monster that was Special Summoned from the Extra Deck: Destroy that monster. * The above text is unofficial and describes the card's functionality in the OCG.
--カタストルの影霊衣
--Nekroz of Catastor
local s,id=GetID()
function s.initial_effect(c)
	c:EnableReviveLimit()
	--cannot special summon
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE+EFFECT_FLAG_UNCOPYABLE)
	e1:SetCode(EFFECT_SPSUMMON_CONDITION)
	e1:SetValue(aux.ritlimit)
	c:RegisterEffect(e1)
	--spsummon
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,0))
	e2:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e2:SetType(EFFECT_TYPE_IGNITION)
	e2:SetRange(LOCATION_HAND)
	e2:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e2:SetCountLimit(1,id)
	e2:SetCost(Cost.SelfDiscard)
	e2:SetTarget(s.sptg)
	e2:SetOperation(s.spop)
	c:RegisterEffect(e2)
	--destroy
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id,1))
	e3:SetCategory(CATEGORY_DESTROY)
	e3:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_F)
	e3:SetCode(EVENT_BATTLE_START)
	e3:SetRange(LOCATION_MZONE)
	e3:SetCondition(s.condition)
	e3:SetTarget(s.target)
	e3:SetOperation(s.operation)
	c:RegisterEffect(e3)
end
s.listed_series={SET_NEKROZ}
s.listed_names={id}
function s.mat_filter(c)
	return not c:IsCode(id)
end
function s.spfilter(c,e,tp)
	return c:IsSetCard(SET_NEKROZ) 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
function s.condition(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetAttacker()
	local bc=Duel.GetAttackTarget()
	if not bc then return false end
	if tc:IsControler(1-tp) then tc,bc=bc,tc end
	if tc:IsSetCard(SET_NEKROZ) and bc:IsSummonLocation(LOCATION_EXTRA) then
		e:SetLabelObject(bc)
		return true
	else return false end
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	local bc=e:GetLabelObject()
	Duel.SetOperationInfo(0,CATEGORY_DESTROY,bc,1,0,0)
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	local bc=e:GetLabelObject()
	if bc:IsRelateToBattle() then
		Duel.Destroy(bc,REASON_EFFECT)
	end
end