Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Cannot be Special Summoned from the Deck. If you control no monsters, you can Normal Summon this card without Tributing. Cannot be destroyed by battle or card effects. You take no battle damage from attacks involving this card. At the end of the Battle Phase, if this card battled: Shuffle all Spells and Traps your opponent controls into the Deck. If this card is sent from the field to the GY: You can draw 1 card. Once per turn, during your Standby Phase: Shuffle this card into the Deck.
--時械神ザフィオン
--Zaphion, the Timelord
local s,id=GetID()
function s.initial_effect(c)
	--cannot special summon
	local e1=Effect.CreateEffect(c)
	e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE+EFFECT_FLAG_UNCOPYABLE+EFFECT_FLAG_SINGLE_RANGE)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetRange(LOCATION_DECK)
	e1:SetCode(EFFECT_SPSUMMON_CONDITION)
	c:RegisterEffect(e1)
	--summon
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,0))
	e2:SetProperty(EFFECT_FLAG_CANNOT_DISABLE+EFFECT_FLAG_UNCOPYABLE)
	e2:SetType(EFFECT_TYPE_SINGLE)
	e2:SetCode(EFFECT_SUMMON_PROC)
	e2:SetCondition(s.ntcon)
	c:RegisterEffect(e2)
	--indes
	local e3=Effect.CreateEffect(c)
	e3:SetType(EFFECT_TYPE_SINGLE)
	e3:SetProperty(EFFECT_FLAG_SINGLE_RANGE)
	e3:SetRange(LOCATION_MZONE)
	e3:SetCode(EFFECT_INDESTRUCTABLE_BATTLE)
	e3:SetValue(1)
	c:RegisterEffect(e3)
	local e4=e3:Clone()
	e4:SetCode(EFFECT_INDESTRUCTABLE_EFFECT)
	c:RegisterEffect(e4)
	local e5=e3:Clone()
	e5:SetCode(EFFECT_AVOID_BATTLE_DAMAGE)
	c:RegisterEffect(e5)
	--to deck
	local e6=Effect.CreateEffect(c)
	e6:SetDescription(aux.Stringid(id,1))
	e6:SetCategory(CATEGORY_TODECK)
	e6:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_F)
	e6:SetCode(EVENT_PHASE|PHASE_BATTLE)
	e6:SetCountLimit(1)
	e6:SetRange(LOCATION_MZONE)
	e6:SetCondition(s.tdcon)
	e6:SetTarget(s.tdtg)
	e6:SetOperation(s.tdop)
	c:RegisterEffect(e6)
	--draw
	local e7=Effect.CreateEffect(c)
	e7:SetDescription(aux.Stringid(id,2))
	e7:SetCategory(CATEGORY_DRAW)
	e7:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e7:SetProperty(EFFECT_FLAG_DELAY)
	e7:SetCode(EVENT_TO_GRAVE)
	e7:SetCountLimit(1)
	e7:SetCondition(s.drcon)
	e7:SetTarget(s.drtg)
	e7:SetOperation(s.drop)
	c:RegisterEffect(e7)
	--to deck
	local e8=Effect.CreateEffect(c)
	e8:SetDescription(aux.Stringid(id,3))
	e8:SetCategory(CATEGORY_TODECK)
	e8:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_F)
	e8:SetCode(EVENT_PHASE|PHASE_STANDBY)
	e8:SetCountLimit(1)
	e8:SetRange(LOCATION_MZONE)
	e8:SetCondition(s.rtdcon)
	e8:SetTarget(s.rtdtg)
	e8:SetOperation(s.rtdop)
	c:RegisterEffect(e8)
end
function s.ntcon(e,c,minc)
	if c==nil then return true end
	return minc==0 and c:GetLevel()>4
		and Duel.GetFieldGroupCount(c:GetControler(),LOCATION_MZONE,0)==0
		and Duel.GetLocationCount(c:GetControler(),LOCATION_MZONE)>0
end
function s.tdcon(e,tp,eg,ep,ev,re,r,rp)
	return e:GetHandler():GetBattledGroupCount()>0
end
function s.tdfilter(c)
	return c:IsSpellTrap() and c:IsAbleToDeck()
end
function s.tdtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	local g=Duel.GetMatchingGroup(s.tdfilter,tp,0,LOCATION_ONFIELD,nil)
	Duel.SetOperationInfo(0,CATEGORY_TODECK,g,#g,0,0)
end
function s.tdop(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetMatchingGroup(s.tdfilter,tp,0,LOCATION_ONFIELD,nil)
	if #g>0 then
		Duel.SendtoDeck(g,nil,SEQ_DECKSHUFFLE,REASON_EFFECT)
	end
end
function s.drcon(e,tp,eg,ep,ev,re,r,rp)
	return e:GetHandler():IsPreviousLocation(LOCATION_ONFIELD)
end
function s.drtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsPlayerCanDraw(tp,1) end
	Duel.SetTargetPlayer(tp)
	Duel.SetTargetParam(1)
	Duel.SetOperationInfo(0,CATEGORY_DRAW,nil,0,tp,1)
end
function s.drop(e,tp,eg,ep,ev,re,r,rp)
	local p,d=Duel.GetChainInfo(0,CHAININFO_TARGET_PLAYER,CHAININFO_TARGET_PARAM)
	Duel.Draw(p,d,REASON_EFFECT)
end
function s.rtdcon(e,tp,eg,ep,ev,re,r,rp)
	return Duel.IsTurnPlayer(tp)
end
function s.rtdtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	Duel.SetOperationInfo(0,CATEGORY_TODECK,e:GetHandler(),1,0,0)
end
function s.rtdop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if c:IsRelateToEffect(e) then
		Duel.SendtoDeck(c,nil,SEQ_DECKSHUFFLE,REASON_EFFECT)
	end
end