Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
If this card is Normal or Special Summoned: You can add 1 Spell/Trap that mentions "Ancient Fairy Dragon" from your Deck to your hand. During your Main Phase: You can Special Summon 1 Level 4 or lower LIGHT monster (Beast, Plant, or Fairy) from your hand in Defense Position. You can banish this card from your GY, then target 1 Field Spell in your GY; place it on the bottom of the Deck, then draw 1 card. You can only use each effect of "Regulus the Fairy Beast" once per turn.
--妖精獣レグルス
--Regulus the Fairy Beast
--Scripted by Eerie Code
local s,id=GetID()
function s.initial_effect(c)
	--Add 1 Spell/Trap the mentions "Ancient Fairy Dragon" from your Deck to your hand
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_TOHAND+CATEGORY_SEARCH)
	e1:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e1:SetProperty(EFFECT_FLAG_DELAY)
	e1:SetCode(EVENT_SUMMON_SUCCESS)
	e1:SetCountLimit(1,id)
	e1:SetTarget(s.thtg)
	e1:SetOperation(s.thop)
	c:RegisterEffect(e1)
	local e2=e1:Clone()
	e2:SetCode(EVENT_SPSUMMON_SUCCESS)
	c:RegisterEffect(e2)
	--Special Summon 1 Level 4 or lower LIGHT Beast, Plant, or Fairy monster from your hand in Defense Position
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id,1))
	e3:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e3:SetType(EFFECT_TYPE_IGNITION)
	e3:SetRange(LOCATION_MZONE)
	e3:SetCountLimit(1,{id,1})
	e3:SetTarget(s.sptg)
	e3:SetOperation(s.spop)
	c:RegisterEffect(e3)
	--Place 1 Field Spell from your GY on the bottom of the Deck, then draw 1 card
	local e4=Effect.CreateEffect(c)
	e4:SetDescription(aux.Stringid(id,2))
	e4:SetCategory(CATEGORY_TODECK+CATEGORY_DRAW)
	e4:SetType(EFFECT_TYPE_IGNITION)
	e4:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e4:SetRange(LOCATION_GRAVE)
	e4:SetCountLimit(1,{id,2})
	e4:SetCost(Cost.SelfBanish)
	e4:SetTarget(s.tdtg)
	e4:SetOperation(s.tdop)
	c:RegisterEffect(e4)
end
s.listed_names={CARD_ANCIENT_FAIRY_DRAGON}
function s.thfilter(c)
	return c:IsSpellTrap() and c:ListsCode(CARD_ANCIENT_FAIRY_DRAGON) 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_DECK,0,1,nil) end
	Duel.SetOperationInfo(0,CATEGORY_TOHAND,nil,1,tp,LOCATION_DECK)
end
function s.thop(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATOHAND)
	local g=Duel.SelectMatchingCard(tp,s.thfilter,tp,LOCATION_DECK,0,1,1,nil)
	if #g>0 then
		Duel.SendtoHand(g,nil,REASON_EFFECT)
		Duel.ConfirmCards(1-tp,g)
	end
end
function s.spfilter(c,e,tp)
	return c:IsRace(RACE_BEAST|RACE_PLANT|RACE_FAIRY) and c:IsAttribute(ATTRIBUTE_LIGHT) and c:IsLevelBelow(4)
		and c:IsCanBeSpecialSummoned(e,0,tp,false,false,POS_FACEUP_DEFENSE)
end
function s.sptg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and Duel.IsExistingMatchingCard(s.spfilter,tp,LOCATION_HAND,0,1,nil,e,tp) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_HAND)
end
function s.spop(e,tp,eg,ep,ev,re,r,rp)
	if Duel.GetLocationCount(tp,LOCATION_MZONE)<=0 then return end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local g=Duel.SelectMatchingCard(tp,s.spfilter,tp,LOCATION_HAND,0,1,1,nil,e,tp)
	if #g>0 then
		Duel.SpecialSummon(g,0,tp,tp,false,false,POS_FACEUP_DEFENSE)
	end
end
function s.tdtg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_GRAVE) and chkc:IsControler(tp) and chkc:IsFieldSpell() and chkc:IsAbleToDeck() end
	if chk==0 then return Duel.IsPlayerCanDraw(tp,1)
		and Duel.IsExistingTarget(aux.AND(Card.IsFieldSpell,Card.IsAbleToDeck),tp,LOCATION_GRAVE,0,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TODECK)
	local g=Duel.SelectTarget(tp,aux.AND(Card.IsFieldSpell,Card.IsAbleToDeck),tp,LOCATION_GRAVE,0,1,1,nil)
	Duel.SetOperationInfo(0,CATEGORY_TODECK,g,1,tp,0)
	Duel.SetOperationInfo(0,CATEGORY_DRAW,nil,1,tp,0)
end
function s.tdop(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc:IsRelateToEffect(e) and Duel.SendtoDeck(tc,nil,SEQ_DECKBOTTOM,REASON_EFFECT)>0
		and tc:IsLocation(LOCATION_DECK) and Duel.IsPlayerCanDraw(tp) then
		Duel.BreakEffect()
		Duel.Draw(tp,1,REASON_EFFECT)
	end
end