Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
2+ monsters Special Summoned from the Extra Deck If a monster(s) this card points to that was Special Summoned from the Extra Deck is destroyed by battle or an opponent's card effect: You can add 1 monster from your GY, or 1 face-up Pendulum Monster from your Extra Deck, to your hand. You can target 1 monster on each player's field that was Special Summoned from the Extra Deck, except this card; banish both until the End Phase. You can only use each effect of "Zefra Metaltron" once per turn. * The above text is unofficial and describes the card's functionality in the OCG.
--セフィラ・メタトロン
--Zefra Metaltron
--Scripted by Eerie Code
local s,id=GetID()
function s.initial_effect(c)
	c:EnableReviveLimit()
	Link.AddProcedure(c,s.matfilter,2)
	--Add 1 monster to your hand
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_CONTINUOUS)
	e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCode(EVENT_LEAVE_FIELD_P)
	e1:SetCondition(s.regcon)
	e1:SetOperation(s.regop)
	c:RegisterEffect(e1)
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,0))
	e2:SetCategory(CATEGORY_TOHAND)
	e2:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_O)
	e2:SetProperty(EFFECT_FLAG_DELAY+EFFECT_FLAG_DAMAGE_STEP)
	e2:SetCode(EVENT_DESTROYED)
	e2:SetRange(LOCATION_MZONE)
	e2:SetCountLimit(1,id)
	e2:SetCondition(s.thcon)
	e2:SetTarget(s.thtg)
	e2:SetOperation(s.thop)
	c:RegisterEffect(e2)
	--Banish 1 monster from each side of the field
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id,1))
	e3:SetCategory(CATEGORY_REMOVE)
	e3:SetType(EFFECT_TYPE_IGNITION)
	e3:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e3:SetRange(LOCATION_MZONE)
	e3:SetCountLimit(1,{id,1})
	e3:SetTarget(s.rmtg)
	e3:SetOperation(s.rmop)
	c:RegisterEffect(e3)
end
function s.matfilter(c)
	return c:IsSummonLocation(LOCATION_EXTRA)
end
function s.thcfilter(c,lc,tp)
	return (c:IsReason(REASON_BATTLE) or (c:IsReason(REASON_EFFECT) and c:GetReasonPlayer()==1-tp))
		and lc:GetLinkedGroup():IsContains(c) and c:IsSummonLocation(LOCATION_EXTRA)
		and c:IsLocation(LOCATION_MZONE)
end
function s.regcon(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	return eg:IsExists(s.thcfilter,1,c,c,tp)
end
function s.regop(e,tp,eg,ep,ev,re,r,rp)
	e:GetHandler():RegisterFlagEffect(id,RESET_EVENT|RESETS_STANDARD|RESET_CHAIN,0,1)
end
function s.thcon(e,tp,eg,ep,ev,re,r,rp)
	return e:GetHandler():GetFlagEffect(id)>0
end
function s.thfilter(c)
	return (not c:IsLocation(LOCATION_EXTRA) or (c:IsFaceup() and c:IsType(TYPE_PENDULUM)))
		and c:IsMonster() and c:IsAbleToHand()
end
function s.thtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.thfilter,tp,LOCATION_GRAVE|LOCATION_EXTRA,0,1,nil) end
	Duel.SetOperationInfo(0,CATEGORY_TOHAND,nil,1,tp,LOCATION_GRAVE|LOCATION_EXTRA)
end
function s.thop(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATOHAND)
	local g=Duel.SelectMatchingCard(tp,aux.NecroValleyFilter(s.thfilter),tp,LOCATION_GRAVE|LOCATION_EXTRA,0,1,1,nil)
	if #g>0 then
		Duel.HintSelection(g,true)
		Duel.SendtoHand(g,nil,REASON_EFFECT)
		Duel.ConfirmCards(1-tp,g)
	end
end
function s.rmfilter(c,e)
	return c:IsCanBeEffectTarget(e) and c:IsSummonLocation(LOCATION_EXTRA) and c:IsAbleToRemove()
end
function s.rescon(sg,e,tp,mg)
	return sg:FilterCount(Card.IsControler,nil,tp)==1
end
function s.rmtg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return false end
	local rg=Duel.GetMatchingGroup(s.rmfilter,tp,LOCATION_MZONE,LOCATION_MZONE,e:GetHandler(),e)
	if chk==0 then return aux.SelectUnselectGroup(rg,e,tp,2,2,s.rescon,0) end
	local tg=aux.SelectUnselectGroup(rg,e,tp,2,2,s.rescon,1,tp,HINTMSG_REMOVE)
	Duel.SetTargetCard(tg)
	Duel.SetOperationInfo(0,CATEGORY_REMOVE,tg,2,0,0)
end
function s.rmop(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetTargetCards(e)
	if #g~=2 then return end
	for tc in aux.Next(g) do
		if Duel.Remove(tc,0,REASON_EFFECT|REASON_TEMPORARY)~=0 then
			tc:RegisterFlagEffect(id,RESETS_STANDARD_PHASE_END,0,1)
		end
	end
	g:KeepAlive()
	local e1=Effect.CreateEffect(e:GetHandler())
	e1:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_CONTINUOUS)
	e1:SetCode(EVENT_PHASE+PHASE_END)
	e1:SetReset(RESET_PHASE|PHASE_END)
	e1:SetLabelObject(g)
	e1:SetCountLimit(1)
	e1:SetCondition(s.retcon)
	e1:SetOperation(s.retop)
	Duel.RegisterEffect(e1,tp)
end
function s.retfilter(c)
	return c:GetFlagEffect(id)~=0
end
function s.retcon(e,tp,eg,ep,ev,re,r,rp)
	local g=e:GetLabelObject()
	if not g:IsExists(s.retfilter,1,nil) then
		g:DeleteGroup()
		e:Reset()
		return false
	else return true end
end
function s.retop(e,tp,eg,ep,ev,re,r,rp)
	local g=e:GetLabelObject():Filter(s.retfilter,nil)
	g:DeleteGroup()
	local tc=g:GetFirst()
	for tc in aux.Next(g) do
		Duel.ReturnToField(tc)
	end
end