Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
2 Level 8 monsters Once per turn: You can declare 1 card name; excavate the top card of your Deck, and if it is the declared card, add it to your hand. Otherwise, send it to the GY. If a card(s) is sent from your Deck to the GY by a card effect (except during the Damage Step): You can detach 1 material from this card, then target 1 card on the field; place that target on either the top or bottom of the Deck. You can only use this effect of "Alsei, the Sylvan High Protector" once per turn.
--森羅の守神 アルセイ
--Alsei, the Sylvan High Protector
local s,id=GetID()
function s.initial_effect(c)
	--Xyz Summon
	Xyz.AddProcedure(c,nil,8,2)
	c:EnableReviveLimit()
	--Declare 1 card name and excavate the top card
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_TOHAND+CATEGORY_SEARCH+CATEGORY_DECKDES)
	e1:SetType(EFFECT_TYPE_IGNITION)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCountLimit(1)
	e1:SetTarget(s.target)
	e1:SetOperation(s.operation)
	c:RegisterEffect(e1)
	--Return target to top or bottom of the Deck
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,1))
	e2:SetCategory(CATEGORY_TODECK)
	e2:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_O)
	e2:SetProperty(EFFECT_FLAG_CARD_TARGET+EFFECT_FLAG_DELAY)
	e2:SetCode(EVENT_TO_GRAVE)
	e2:SetRange(LOCATION_MZONE)
	e2:SetCountLimit(1,id)
	e2:SetCondition(s.tdcon)
	e2:SetCost(Cost.DetachFromSelf(1,1,nil))
	e2:SetTarget(s.tdtg)
	e2:SetOperation(s.tdop)
	c:RegisterEffect(e2)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsPlayerCanDiscardDeck(tp,1) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_CODE)
	s.announce_filter={TYPE_EXTRA,OPCODE_ISTYPE,OPCODE_NOT}
	local ac=Duel.AnnounceCard(tp,table.unpack(s.announce_filter))
	Duel.SetTargetParam(ac)
	Duel.SetOperationInfo(0,CATEGORY_ANNOUNCE,nil,0,tp,ANNOUNCE_CARD_FILTER)
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	if not Duel.IsPlayerCanDiscardDeck(tp,1) then return end
	Duel.ConfirmDecktop(tp,1)
	local g=Duel.GetDecktopGroup(tp,1)
	local tc=g:GetFirst()
	local ac=Duel.GetChainInfo(0,CHAININFO_TARGET_PARAM)
	if tc:IsCode(ac) and tc:IsAbleToHand() then
		Duel.DisableShuffleCheck()
		Duel.SendtoHand(tc,nil,REASON_EFFECT)
		Duel.ShuffleHand(tp)
	else
		Duel.DisableShuffleCheck()
		Duel.SendtoGrave(tc,REASON_EFFECT|REASON_EXCAVATE)
	end
end
function s.cfilter(c,tp)
	return c:IsReason(REASON_EFFECT) and c:IsPreviousLocation(LOCATION_DECK) and c:IsPreviousControler(tp)
end
function s.tdcon(e,tp,eg,ep,ev,re,r,rp)
	return eg:IsExists(s.cfilter,1,nil,tp)
end
function s.tdtg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsOnField() and chkc:IsAbleToDeck() end
	if chk==0 then return Duel.IsExistingTarget(Card.IsAbleToDeck,tp,LOCATION_ONFIELD,LOCATION_ONFIELD,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TODECK)
	local g=Duel.SelectTarget(tp,Card.IsAbleToDeck,tp,LOCATION_ONFIELD,LOCATION_ONFIELD,1,1,nil)
	Duel.SetOperationInfo(0,CATEGORY_TODECK,g,1,0,0)
end
function s.tdop(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if not tc:IsRelateToEffect(e) then return end
	if tc:IsType(TYPE_FUSION|TYPE_SYNCHRO|TYPE_XYZ)
		or Duel.SelectOption(tp,aux.Stringid(id,2),aux.Stringid(id,3))==0 then
		Duel.SendtoDeck(tc,nil,SEQ_DECKTOP,REASON_EFFECT)
	else
		Duel.SendtoDeck(tc,nil,SEQ_DECKBOTTOM,REASON_EFFECT)
	end
end