Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Target 1 of your banished "The Phantom Knights" monsters; add it to your hand. When an opponent's monster declares a direct attack while this card is in your GY: You can target 1 Level 4 or lower "The Phantom Knights" monster in your GY; Special Summon that monster, and if you do, Special Summon this card as a Normal Monster with the same original Level as that monster (Warrior/DARK/ATK 0/DEF 0). (This card is NOT treated as a Trap.) If Summoned this way, banish this card when it leaves the field.
--幻影騎士団ミストクロウズ
--The Phantom Knights of Mist Claws
local s,id=GetID()
function s.initial_effect(c)
	--Add 1 of your banished "The Phantom Knights" monsters to your hand
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_TOHAND)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetHintTiming(0,TIMING_END_PHASE)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
	--Special summon itself from GY as a monster
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,1))
	e2:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e2:SetType(EFFECT_TYPE_QUICK_O)
	e2:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e2:SetCode(EVENT_ATTACK_ANNOUNCE)
	e2:SetRange(LOCATION_GRAVE)
	e2:SetCondition(function(_,tp) return Duel.GetAttacker():IsControler(1-tp) and Duel.GetAttackTarget()==nil end)
	e2:SetTarget(s.sptg)
	e2:SetOperation(s.spop)
	c:RegisterEffect(e2)
end
s.listed_series={SET_THE_PHANTOM_KNIGHTS}
function s.thfilter(c)
	return c:IsFaceup() and c:IsSetCard(SET_THE_PHANTOM_KNIGHTS) and c:IsMonster() and c:IsAbleToHand()
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_REMOVED) and chkc:IsControler(tp) and s.thfilter(chkc) end
	if chk==0 then return Duel.IsExistingTarget(s.thfilter,tp,LOCATION_REMOVED,0,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATOHAND)
	local g=Duel.SelectTarget(tp,s.thfilter,tp,LOCATION_REMOVED,0,1,1,nil)
	Duel.SetOperationInfo(0,CATEGORY_TOHAND,g,1,tp,0)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc:IsRelateToEffect(e) then
		Duel.SendtoHand(tc,nil,REASON_EFFECT)
		Duel.ConfirmCards(1-tp,tc)
	end
end
function s.spfilter(c,e,tp)
	return c:IsSetCard(SET_THE_PHANTOM_KNIGHTS) and c:IsLevelBelow(4) and c:IsCanBeSpecialSummoned(e,0,tp,false,false)
		and Duel.IsPlayerCanSpecialSummonMonster(tp,id,SET_THE_PHANTOM_KNIGHTS,TYPE_MONSTER|TYPE_NORMAL,0,0,c:GetOriginalLevel(),RACE_WARRIOR,ATTRIBUTE_DARK)
end
function s.sptg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsControler(tp) and chkc:IsLocation(LOCATION_GRAVE) and s.spfilter(chkc,e,tp) end
	if chk==0 then return not e:GetHandler():IsStatus(STATUS_CHAINING)
		and Duel.GetLocationCount(tp,LOCATION_MZONE)>1
		and not Duel.IsPlayerAffectedByEffect(tp,CARD_BLUEEYES_SPIRIT)
		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)
	g:AddCard(e:GetHandler())
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,g,2,tp,0)
end
function s.spop(e,tp,eg,ep,ev,re,r,rp)
	if Duel.GetLocationCount(tp,LOCATION_MZONE)==0 or Duel.IsPlayerAffectedByEffect(tp,CARD_BLUEEYES_SPIRIT) then return end
	local tc=Duel.GetFirstTarget()
	if not tc:IsRelateToEffect(e) then return end
	local c=e:GetHandler()
	local lv=tc:GetOriginalLevel()
	if Duel.SpecialSummonStep(tc,0,tp,tp,false,false,POS_FACEUP) and Duel.GetLocationCount(tp,LOCATION_MZONE)>0 and c:IsRelateToEffect(e) 
		and Duel.IsPlayerCanSpecialSummonMonster(tp,id,SET_THE_PHANTOM_KNIGHTS,TYPE_MONSTER|TYPE_NORMAL,0,0,lv,RACE_WARRIOR,ATTRIBUTE_DARK) then
		c:AddMonsterAttribute(TYPE_NORMAL,0,0,lv,0,0)
		c:AssumeProperty(ASSUME_RACE,RACE_WARRIOR)
		if Duel.SpecialSummonStep(c,0,tp,tp,true,false,POS_FACEUP) then
			c:AddMonsterAttributeComplete()
			--Banish it if it leaves the field
			local e1=Effect.CreateEffect(c)
			e1:SetDescription(3300)
			e1:SetType(EFFECT_TYPE_SINGLE)
			e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE+EFFECT_FLAG_CLIENT_HINT)
			e1:SetCode(EFFECT_LEAVE_FIELD_REDIRECT)
			e1:SetValue(LOCATION_REMOVED)
			e1:SetReset(RESET_EVENT|RESETS_REDIRECT)
			c:RegisterEffect(e1,true)
			--Change Level
			local e2=Effect.CreateEffect(c)
			e2:SetType(EFFECT_TYPE_SINGLE)
			e2:SetProperty(EFFECT_FLAG_CANNOT_DISABLE)
			e2:SetCode(EFFECT_CHANGE_LEVEL_FINAL)
			e2:SetValue(lv)
			e2:SetReset(RESET_EVENT|RESETS_STANDARD&~RESET_TURN_SET)
			c:RegisterEffect(e2,true)
		end
	end
	Duel.SpecialSummonComplete()
end