Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Cannot be destroyed by monster effects. You can only use each of the following effects of "Shining Sarcophagus" once per turn. During your Main Phase: You can add 1 card that mentions "Shining Sarcophagus" from your Deck to your hand, except "Shining Sarcophagus". If your opponent Special Summons a monster(s) from the GY (except during the Damage Step): You can discard 1 Spell, then target 1 of those monsters; send it to the GY.
--光の黄金櫃
--Shining Sarcophagus
--Scripted by Larry126
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	c:RegisterEffect(e1)
	--Cannot be destroyed by monster effects
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_SINGLE)
	e2:SetProperty(EFFECT_FLAG_SINGLE_RANGE)
	e2:SetCode(EFFECT_INDESTRUCTABLE_EFFECT)
	e2:SetRange(LOCATION_SZONE)
	e2:SetValue(function(_,re) return re:IsMonsterEffect() end)
	c:RegisterEffect(e2)
	--Search 1 card that mentions "Shining Sarcophagus"
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id,0))
	e3:SetCategory(CATEGORY_TOHAND+CATEGORY_SEARCH)
	e3:SetType(EFFECT_TYPE_IGNITION)
	e3:SetRange(LOCATION_SZONE)
	e3:SetCountLimit(1,id)
	e3:SetTarget(s.thtg)
	e3:SetOperation(s.thop)
	c:RegisterEffect(e3)
	--Send 1 monster back to the Graveyard
	local e4=Effect.CreateEffect(c)
	e4:SetDescription(aux.Stringid(id,1))
	e4:SetCategory(CATEGORY_TOGRAVE)
	e4:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e4:SetProperty(EFFECT_FLAG_CARD_TARGET+EFFECT_FLAG_DELAY)
	e4:SetCode(EVENT_CUSTOM+id)
	e4:SetRange(LOCATION_SZONE)
	e4:SetCountLimit(1,{id,1})
	e4:SetCondition(function() return Duel.GetCurrentPhase()~=PHASE_DAMAGE end)
	e4:SetCost(s.tgcost)
	e4:SetTarget(s.tgtg)
	e4:SetOperation(s.tgop)
	c:RegisterEffect(e4)
	local g=Group.CreateGroup()
	g:KeepAlive()
	e4:SetLabelObject(g)
	--Mass register
	local e5=Effect.CreateEffect(c)
	e5:SetDescription(aux.Stringid(id,1))
	e5:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_CONTINUOUS)
	e5:SetProperty(EFFECT_FLAG_CANNOT_DISABLE)
	e5:SetCode(EVENT_SPSUMMON_SUCCESS)
	e5:SetRange(LOCATION_SZONE)
	e5:SetLabelObject(e4)
	e5:SetOperation(s.regop)
	c:RegisterEffect(e5)
end
s.listed_names={id}
function s.thfilter(c)
	return c:ListsCode(id) and not c:IsCode(id) 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.tgfilter(c,e,p)
	return c:IsSummonPlayer(p) and c:IsSummonLocation(LOCATION_GRAVE) and c:IsAbleToGrave()
		and c:IsLocation(LOCATION_MZONE) and c:IsCanBeEffectTarget(e)
end
function s.regop(e,tp,eg,ep,ev,re,r,rp)
	local tg=eg:Filter(s.tgfilter,nil,e,1-tp)
	if #tg>0 then
		for tc in tg:Iter() do
			tc:RegisterFlagEffect(id,RESET_CHAIN,0,1)
		end
		local g=e:GetLabelObject():GetLabelObject()
		if Duel.GetCurrentChain()==0 then g:Clear() end
		g:Merge(tg)
		g:Remove(function(c) return c:GetFlagEffect(id)==0 end,nil)
		e:GetLabelObject():SetLabelObject(g)
		Duel.RaiseSingleEvent(e:GetHandler(),EVENT_CUSTOM+id,e,0,tp,tp,0)
	end
end
function s.cfilter(c)
	return c:IsSpell() and c:IsDiscardable()
end
function s.tgcost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.cfilter,tp,LOCATION_HAND,0,1,nil) end
	Duel.DiscardHand(tp,s.cfilter,1,1,REASON_COST|REASON_DISCARD)
end
function s.tgtg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	local g=e:GetLabelObject():Filter(s.tgfilter,nil,e,1-tp)
	if chkc then return g:IsContains(chkc) and s.tgfilter(chkc,e,1-tp) end
	if chk==0 then return #g>0 end
	local tg=g
	if #g>1 then
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TOGRAVE)
		tg=g:Select(tp,1,1,nil)
	end
	Duel.SetTargetCard(tg)
	Duel.SetOperationInfo(0,CATEGORY_TOGRAVE,tg,1,0,0)
end
function s.tgop(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc:IsRelateToEffect(e) then
		Duel.SendtoGrave(tc,REASON_EFFECT)
	end
end