Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
If this card is Summoned: Target 1 face-up card on the field that you can place a Spell Counter on; place 1 Spell Counter on that target. When this card is destroyed by battle: You can Special Summon 1 Level 2 or lower Spellcaster monster from your Deck in face-down Defense Position.
--見習い魔術師
--Apprentice Magician
local s,id=GetID()
function s.initial_effect(c)
	--counter
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_COUNTER)
	e1:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_F)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetCode(EVENT_SUMMON_SUCCESS)
	e1:SetTarget(s.addct)
	e1:SetOperation(s.addc)
	c:RegisterEffect(e1)
	local e2=e1:Clone()
	e2:SetCode(EVENT_FLIP_SUMMON_SUCCESS)
	c:RegisterEffect(e2)
	local e3=e1:Clone()
	e3:SetCode(EVENT_SPSUMMON_SUCCESS)
	c:RegisterEffect(e3)
	--spsummon
	local e4=Effect.CreateEffect(c)
	e4:SetDescription(aux.Stringid(id,1))
	e4:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e4:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e4:SetCode(EVENT_BATTLE_DESTROYED)
	e4:SetCondition(s.condition)
	e4:SetTarget(s.target)
	e4:SetOperation(s.operation)
	c:RegisterEffect(e4)
end
s.counter_list={COUNTER_SPELL}
function s.filter(c)
	return c:IsFaceup() and c:IsCanAddCounter(COUNTER_SPELL,1)
end
function s.addct(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsOnField() and s.filter(chkc) end
	if chk==0 then return true end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_FACEUP)
	Duel.SelectTarget(tp,s.filter,tp,LOCATION_ONFIELD,LOCATION_ONFIELD,1,1,nil)
	Duel.SetOperationInfo(0,CATEGORY_COUNTER,nil,1,0,COUNTER_SPELL)
end
function s.addc(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc and tc:IsFaceup() and tc:IsRelateToEffect(e) then
		tc:AddCounter(COUNTER_SPELL,1)
	end
end
function s.condition(e,tp,eg,ep,ev,re,r,rp)
	return not e:GetHandler():IsLocation(LOCATION_DECK) and e:GetHandler():IsReason(REASON_BATTLE)
end
function s.spfilter(c,e,tp)
	return c:IsLevelBelow(2) and c:IsRace(RACE_SPELLCASTER) and c:IsCanBeSpecialSummoned(e,0,tp,false,false,POS_FACEDOWN_DEFENSE)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and Duel.IsExistingMatchingCard(s.spfilter,tp,LOCATION_DECK,0,1,nil,e,tp) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_DECK)
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	if Duel.GetLocationCount(tp,LOCATION_MZONE)<=0 then return end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local g=Duel.SelectMatchingCard(tp,s.spfilter,tp,LOCATION_DECK,0,1,1,nil,e,tp)
	if #g>0 then
		Duel.SpecialSummon(g,0,tp,tp,false,false,POS_FACEDOWN_DEFENSE)
		Duel.ConfirmCards(1-tp,g)
	end
end