Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
If you have 4 or more monsters in your GY and no monsters in your GY with the same name: You can Tribute this card; excavate the top cards of your Deck, equal to the number of monsters in your GY (or as many as possible), and if you do, if 2 or more monsters were excavated and all excavated monsters had different names, add 1 of those monsters to your hand, also place the remaining cards on top of your Deck in any order. You can banish this card from your GY, then target 1 monster in your GY; place it on the bottom of the Deck. You can only use each effect of "Hydralander Orbit" once per turn.
--ハイドランダー・オービット
--Hydralander Orbit
--Scripted by Eerie Code
local s,id=GetID()
function s.initial_effect(c)
	--Excavate and add to hand
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_TOHAND+CATEGORY_SEARCH)
	e1:SetType(EFFECT_TYPE_IGNITION)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCountLimit(1,{id,0})
	e1:SetCondition(s.excon)
	e1:SetCost(Cost.SelfTribute)
	e1:SetTarget(s.extg)
	e1:SetOperation(s.exop)
	c:RegisterEffect(e1)
	--Place on the bottom of the Deck
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,1))
	e2:SetCategory(CATEGORY_TODECK)
	e2:SetType(EFFECT_TYPE_IGNITION)
	e2:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e2:SetRange(LOCATION_GRAVE)
	e2:SetCountLimit(1,{id,1})
	e2:SetCost(Cost.SelfBanish)
	e2:SetTarget(s.tdtg)
	e2:SetOperation(s.tdop)
	c:RegisterEffect(e2)
end
function s.excon(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetMatchingGroup(Card.IsMonster,tp,LOCATION_GRAVE,0,nil)
	return #g>=4 and g:GetClassCount(Card.GetCode)==#g
end
function s.extg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then
		local ct=Duel.GetMatchingGroupCount(Card.IsMonster,tp,LOCATION_GRAVE,0,nil)
		if ct>0 then
			local g=Duel.GetDecktopGroup(tp,ct)
			local result=g:FilterCount(Card.IsAbleToHand,nil)>0
			return Duel.GetFieldGroupCount(tp,LOCATION_DECK,0)>=ct and result 
		end
		return false
	end
end
function s.exop(e,tp,eg,ep,ev,re,r,rp)
	local ct=Duel.GetMatchingGroupCount(Card.IsMonster,tp,LOCATION_GRAVE,0,nil)
	if ct==0 then return end
	Duel.ConfirmDecktop(tp,ct)
	local g=Duel.GetDecktopGroup(tp,ct)
	if #g==0 then return end
	local g2=g:Filter(Card.IsMonster,nil)
	if #g2>=2 and g2:GetClassCount(Card.GetCode)==#g2 then
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATOHAND)
		local sg=g2:Select(tp,1,1,nil)
		Duel.DisableShuffleCheck()
		if sg:GetFirst():IsAbleToHand() then
			Duel.SendtoHand(sg,nil,REASON_EFFECT)
			Duel.ConfirmCards(1-tp,sg)
			Duel.ShuffleHand(tp)
		else
			Duel.SendtoGrave(sg,REASON_RULE)
		end
		ct=ct-1
	end
	if ct>0 then Duel.SortDecktop(tp,tp,ct) end
end
function s.tdfilter(c)
	return c:IsMonster() and c:IsAbleToDeck()
end
function s.tdtg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_GRAVE) and chkc:IsControler(tp) and s.tdfilter(chkc) end
	if chk==0 then return Duel.IsExistingTarget(s.tdfilter,tp,LOCATION_GRAVE,0,1,e:GetHandler()) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TODECK)
	local g=Duel.SelectTarget(tp,s.tdfilter,tp,LOCATION_GRAVE,0,1,1,e:GetHandler())
	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 tc:IsRelateToEffect(e) then
		Duel.SendtoDeck(tc,nil,SEQ_DECKBOTTOM,REASON_EFFECT)
	end
end