Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
If you have a face-up Pendulum Monster in your Extra Deck, you can Special Summon this card (from your hand). You can only Special Summon "Nemleria Dream Defender - Oreiller" once per turn this way. If you have "Dreaming Nemleria" face-up in your Extra Deck (Quick Effect): You can banish 1 face-down card from your Extra Deck, face-down; this card gains 500 ATK for each monster your opponent currently controls, until the end of this turn. You can only use this effect of "Nemleria Dream Defender - Oreiller" once per turn.
--ネムレリアの夢守り－オレイエ
--Nemleria Dream Defender - Oreiller
--Scripted by Satella
local s,id=GetID()
function s.initial_effect(c)
	--Special Summon itself from the hand
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_FIELD)
	e1:SetProperty(EFFECT_FLAG_UNCOPYABLE)
	e1:SetCode(EFFECT_SPSUMMON_PROC)
	e1:SetRange(LOCATION_HAND)
	e1:SetCountLimit(1,id,EFFECT_COUNT_CODE_OATH)
	e1:SetCondition(s.spcon)
	c:RegisterEffect(e1)
	--Gains 500 ATK for each of opponent's monster
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,0))
	e2:SetCategory(CATEGORY_ATKCHANGE)
	e2:SetType(EFFECT_TYPE_QUICK_O)
	e2:SetProperty(EFFECT_FLAG_DAMAGE_STEP)
	e2:SetCode(EVENT_FREE_CHAIN)
	e2:SetRange(LOCATION_MZONE)
	e2:SetHintTiming(TIMING_DAMAGE_STEP,TIMING_DAMAGE_STEP|TIMINGS_CHECK_MONSTER_E)
	e2:SetCountLimit(1,{id,1})
	e2:SetCondition(s.atkcon)
	e2:SetCost(s.atkcost)
	e2:SetTarget(s.atktg)
	e2:SetOperation(s.atkop)
	c:RegisterEffect(e2)
end
s.listed_names={CARD_DREAMING_NEMLERIA}
function s.spcon(e,c)
	if c==nil then return true end
	local tp=c:GetControler()
	return Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and Duel.IsExistingMatchingCard(aux.FaceupFilter(Card.IsType,TYPE_PENDULUM),tp,LOCATION_EXTRA,0,1,nil)
end
function s.atkcon(e,tp,eg,ep,ev,re,r,rp)
	return Duel.IsExistingMatchingCard(aux.FaceupFilter(Card.IsCode,CARD_DREAMING_NEMLERIA),tp,LOCATION_EXTRA,0,1,nil)
		and aux.StatChangeDamageStepCondition()
end
function s.cfilter(c)
	return c:IsFacedown() and c:IsAbleToRemoveAsCost(POS_FACEDOWN)
end
function s.atkcost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.cfilter,tp,LOCATION_EXTRA,0,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_REMOVE)
	local g=Duel.SelectMatchingCard(tp,s.cfilter,tp,LOCATION_EXTRA,0,1,1,nil)
	Duel.Remove(g,POS_FACEDOWN,REASON_COST)
end
function s.atktg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.GetFieldGroupCount(tp,0,LOCATION_MZONE)>0 end
end
function s.atkop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if not (c:IsFaceup() and c:IsRelateToEffect(e)) then return end
	local ct=Duel.GetFieldGroupCount(tp,0,LOCATION_MZONE)
	if ct==0 then return end
	--Increase ATK
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetCode(EFFECT_UPDATE_ATTACK)
	e1:SetValue(ct*500)
	e1:SetReset(RESETS_STANDARD_DISABLE_PHASE_END)
	c:RegisterEffect(e1)
end