Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
This card is used to Ritual Summon "Paladin of Dark Dragon". You must also Tribute monsters from your hand or field whose total Levels equal 4 or more. During your Main Phase, except the turn this card was sent to the GY: You can banish this card from your GY; add 1 "Red-Eyes" Spell/Trap from your Deck to your hand.
--黒竜降臨
--Dark Dragon Ritual
local s,id=GetID()
function s.initial_effect(c)
	Ritual.AddProcGreaterCode(c,4,nil,71408082)
	--to hand
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_TOHAND+CATEGORY_SEARCH)
	e1:SetType(EFFECT_TYPE_IGNITION)
	e1:SetRange(LOCATION_GRAVE)
	e1:SetCondition(aux.exccon)
	e1:SetCost(Cost.SelfBanish)
	e1:SetTarget(s.thtg)
	e1:SetOperation(s.thop)
	c:RegisterEffect(e1)
end
s.listed_series={SET_RED_EYES}
function s.thfilter(c)
	return c:IsSetCard(SET_RED_EYES) and c:IsSpellTrap() 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