Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
You can send 1 face-up "Centur-Ion" card you control to the GY; Special Summon this card from your hand, also you cannot Special Summon "Centur-Ion Gargoyle II" for the rest of this turn. If this card is sent to the GY as Synchro Material: You can add this card to your hand. During the Main Phase, if this card is a Continuous Trap: You can Special Summon this card, then you can reduce its Level by 4. You can only use each effect of "Centur-Ion Gargoyle II" once per turn.
--竜騎兵ガーゴイルⅡ
--Centur-Ion Gargoyle II
--scripted by Naim
local s,id=GetID()
function s.initial_effect(c)
	--Special Summon itself from the hand
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e1:SetType(EFFECT_TYPE_IGNITION)
	e1:SetRange(LOCATION_HAND)
	e1:SetCountLimit(1,id)
	e1:SetCost(s.spcost)
	e1:SetTarget(s.sptg)
	e1:SetOperation(s.spop)
	c:RegisterEffect(e1)
	--Add itself to the hand
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,1))
	e2:SetCategory(CATEGORY_TOHAND)
	e2:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e2:SetProperty(EFFECT_FLAG_DELAY)
	e2:SetCode(EVENT_BE_MATERIAL)
	e2:SetCountLimit(1,{id,1})
	e2:SetCondition(s.thcond)
	e2:SetTarget(s.thtg)
	e2:SetOperation(s.thop)
	c:RegisterEffect(e2)
	--Special Summon this card if it is a Continuous Trap
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id,2))
	e3:SetCategory(CATEGORY_SPECIAL_SUMMON+CATEGORY_LVCHANGE)
	e3:SetType(EFFECT_TYPE_QUICK_O)
	e3:SetCode(EVENT_FREE_CHAIN)
	e3:SetRange(LOCATION_SZONE)
	e3:SetCountLimit(1,{id,2})
	e3:SetHintTiming(0,TIMINGS_CHECK_MONSTER|TIMING_MAIN_END)
	e3:SetCondition(function(e) return Duel.IsMainPhase() and e:GetHandler():IsContinuousTrap() end)
	e3:SetTarget(s.splvtg)
	e3:SetOperation(s.splvop)
	c:RegisterEffect(e3)
end
s.listed_series={SET_CENTURION}
s.listed_names={id}
function s.costfilter(c,tp)
	return c:IsSetCard(SET_CENTURION) and c:IsFaceup() and c:IsAbleToGraveAsCost() and Duel.GetMZoneCount(tp,c)>0
end
function s.spcost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.costfilter,tp,LOCATION_ONFIELD,0,1,nil,tp) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TOGRAVE)
	local g=Duel.SelectMatchingCard(tp,s.costfilter,tp,LOCATION_ONFIELD,0,1,1,nil,tp)
	Duel.SendtoGrave(g,REASON_COST)
end
function s.sptg(e,tp,eg,ep,ev,re,r,rp,chk)
	local c=e:GetHandler()
	if chk==0 then return c:IsCanBeSpecialSummoned(e,0,tp,false,false) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,c,1,tp,LOCATION_HAND)
end
function s.spop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if c:IsRelateToEffect(e) then
		Duel.SpecialSummon(c,0,tp,tp,false,false,POS_FACEUP)
	end
	--Cannot Special Summon "Centur-Ion Gargoyle II" for the rest of this turn
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,3))
	e1:SetType(EFFECT_TYPE_FIELD)
	e1:SetProperty(EFFECT_FLAG_PLAYER_TARGET+EFFECT_FLAG_CLIENT_HINT)
	e1:SetCode(EFFECT_CANNOT_SPECIAL_SUMMON)
	e1:SetTargetRange(1,0)
	e1:SetTarget(function(_,c) return c:IsCode(id) end)
	e1:SetReset(RESET_PHASE|PHASE_END)
	Duel.RegisterEffect(e1,tp)
end
function s.thcond(e,tp,eg,ep,ev,re,r,rp)
	return e:GetHandler():IsLocation(LOCATION_GRAVE) and r==REASON_SYNCHRO
end
function s.thtg(e,tp,eg,ep,ev,re,r,rp,chk)
	local c=e:GetHandler()
	if chk==0 then return c:IsAbleToHand() end
	Duel.SetOperationInfo(0,CATEGORY_TOHAND,c,1,tp,0)
end
function s.thop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if c:IsRelateToEffect(e) then
		Duel.SendtoHand(c,nil,REASON_EFFECT)
	end
end
function s.splvtg(e,tp,eg,ep,ev,re,r,rp,chk)
	local c=e:GetHandler()
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and c:IsCanBeSpecialSummoned(e,0,tp,false,false) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,c,1,tp,0)
end
function s.splvop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if c:IsRelateToEffect(e) and Duel.SpecialSummon(c,0,tp,tp,false,false,POS_FACEUP)>0
		and c:IsLevelAbove(5) and Duel.SelectYesNo(tp,aux.Stringid(id,4)) then
		Duel.BreakEffect()
		--Decrease its Level by 4
		local e1=Effect.CreateEffect(c)
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE)
		e1:SetCode(EFFECT_UPDATE_LEVEL)
		e1:SetValue(-4)
		e1:SetReset(RESET_EVENT|RESETS_STANDARD)
		c:RegisterEffect(e1)
	end
end