Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
You can only use each effect of "Sylvan Princessprout" once per turn. ● You can Tribute this card; excavate the top card of your Deck, send it to the GY, then you can place 1 "sprout" monster in your GY on top of your Deck. ● If this card is excavated from the Deck and sent to the GY by a card effect: You can declare a Level from 1 to 8; Special Summon this card from the GY, and if you do, it becomes that Level. * The above text is unofficial and describes the card's functionality in the OCG.
--森羅の姫芽君 スプラウト
--Sylvan Princessprout
local s,id=GetID()
function s.initial_effect(c)
	--Excavate and send to the GY and return card to the Deck
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_DECKDES+CATEGORY_TODECK)
	e1:SetType(EFFECT_TYPE_IGNITION)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCountLimit(1,id)
	e1:SetCost(Cost.SelfTribute)
	e1:SetTarget(s.target)
	e1:SetOperation(s.operation)
	c:RegisterEffect(e1)
	--Special Summon itself and change level
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,1))
	e2:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e2:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e2:SetProperty(EFFECT_FLAG_DELAY)
	e2:SetCode(EVENT_TO_GRAVE)
	e2:SetCountLimit(1,{id,1})
	e2:SetCondition(s.spcon)
	e2:SetTarget(s.sptg)
	e2:SetOperation(s.spop)
	c:RegisterEffect(e2)
end
s.listed_series={SET_SPROUT}
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsPlayerCanDiscardDeck(tp,1) end
	Duel.SetPossibleOperationInfo(0,CATEGORY_TODECK,nil,1,tp,LOCATION_GRAVE)
end
function s.tdfilter(c)
	return c:IsSetCard(SET_SPROUT) and c:IsMonster() and c:IsAbleToDeck()
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)
	Duel.DisableShuffleCheck()
	if Duel.SendtoGrave(g,REASON_EFFECT|REASON_EXCAVATE)==0 then return end
	local dg=Duel.GetMatchingGroup(aux.NecroValleyFilter(s.tdfilter),tp,LOCATION_GRAVE,0,nil)
	if #dg>0 and Duel.SelectYesNo(tp,aux.Stringid(id,2)) then
		Duel.BreakEffect()
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TODECK)
		local tg=dg:Select(tp,1,1,nil)
		Duel.HintSelection(tg,true)
		Duel.SendtoDeck(tg,nil,SEQ_DECKTOP,REASON_EFFECT)
	end
end
function s.spcon(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	return c:IsPreviousLocation(LOCATION_DECK) and c:IsReason(REASON_EXCAVATE)
end
function s.sptg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and e:GetHandler():IsCanBeSpecialSummoned(e,0,tp,false,false) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_LVRANK)
	local lv=Duel.AnnounceLevel(tp,1,8)
	Duel.SetTargetParam(lv)
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,e:GetHandler(),1,0,0)
end
function s.spop(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 then
		local lv=Duel.GetChainInfo(0,CHAININFO_TARGET_PARAM)
		local e1=Effect.CreateEffect(c)
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_CHANGE_LEVEL)
		e1:SetValue(lv)
		e1:SetReset(RESET_EVENT|RESETS_STANDARD_DISABLE)
		c:RegisterEffect(e1)
	end
end