Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Each time a face-up "Mythical Beast" Pendulum Monster Card(s) you control is destroyed by battle or card effect, place 2 Spell Counters on this card. Once per turn: You can remove any number of Spell Counters from your field; add 1 monster to your hand from your Deck or face-up Extra Deck, with a Level equal to the number removed, that you can place a Spell Counter on. If this card on the field would be destroyed by card effect, you can remove 1 Spell Counter from this card instead.
--魔導研究所
--Mythical Institution
--Scripted by Eerie Code
local s,id=GetID()
function s.initial_effect(c)
	c:EnableCounterPermit(COUNTER_SPELL)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	c:RegisterEffect(e1)
	--Place Spell counters
	local e2=Effect.CreateEffect(c)
	e2:SetCategory(CATEGORY_COUNTER)
	e2:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_CONTINUOUS)
	e2:SetCode(EVENT_DESTROYED)
	e2:SetRange(LOCATION_SZONE)
	e2:SetCondition(s.ctcon)
	e2:SetOperation(s.ctop)
	c:RegisterEffect(e2)
	--Add 1 monster to hand
	local e3=Effect.CreateEffect(c)
	e3:SetCategory(CATEGORY_TOHAND+CATEGORY_SEARCH)
	e3:SetType(EFFECT_TYPE_IGNITION)
	e3:SetRange(LOCATION_SZONE)
	e3:SetCountLimit(1)
	e3:SetTarget(s.thtg)
	e3:SetOperation(s.thop)
	c:RegisterEffect(e3)
	--Destruction replacement
	local e4=Effect.CreateEffect(c)
	e4:SetType(EFFECT_TYPE_CONTINUOUS+EFFECT_TYPE_SINGLE)
	e4:SetCode(EFFECT_DESTROY_REPLACE)
	e4:SetProperty(EFFECT_FLAG_SINGLE_RANGE)
	e4:SetRange(LOCATION_SZONE)
	e4:SetTarget(s.desreptg)
	e4:SetOperation(s.desrepop)
	c:RegisterEffect(e4)
end
s.counter_place_list={COUNTER_SPELL}
function s.ctfilter(c,tp)
	return c:IsPreviousPosition(POS_FACEUP) and c:IsPreviousLocation(LOCATION_ONFIELD)
		and (c:GetPreviousTypeOnField()&TYPE_PENDULUM)~=0 and c:IsPreviousSetCard(SET_MYTHICAL_BEAST) 
		and c:IsPreviousControler(tp) and c:IsReason(REASON_BATTLE|REASON_EFFECT)
end
function s.ctcon(e,tp,eg,ep,ev,re,r,rp)
	return eg:IsExists(s.ctfilter,1,nil,tp)
end
function s.ctop(e,tp,eg,ep,ev,re,r,rp)
	e:GetHandler():AddCounter(COUNTER_SPELL,2)
end
function s.thfilter(c,tp)
	return c:IsCanAddCounter(COUNTER_SPELL,1,false,LOCATION_MZONE) and c:IsLevelAbove(1)
		and c:IsAbleToHand() and (c:IsFaceup() or c:IsLocation(LOCATION_DECK))
		and Duel.IsCanRemoveCounter(tp,1,0,COUNTER_SPELL,c:GetLevel(),REASON_COST)
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|LOCATION_EXTRA,0,1,nil,tp) end
	local g=Duel.GetMatchingGroup(s.thfilter,tp,LOCATION_DECK|LOCATION_EXTRA,0,nil,tp)
	local lvt={}
	local tc=g:GetFirst()
	for tc in aux.Next(g) do
		local tlv=tc:GetLevel()
		lvt[tlv]=tlv
	end
	local pc=1
	for i=1,12 do
		if lvt[i] then lvt[i]=nil lvt[pc]=i pc=pc+1 end
	end
	lvt[pc]=nil
	Duel.Hint(HINT_SELECTMSG,tp,aux.Stringid(id,1))
	local lv=Duel.AnnounceNumber(tp,table.unpack(lvt))
	Duel.RemoveCounter(tp,1,0,COUNTER_SPELL,lv,REASON_COST)
	e:SetLabel(lv)
	Duel.SetOperationInfo(0,CATEGORY_TOHAND,nil,1,tp,LOCATION_DECK|LOCATION_EXTRA)
end
function s.filter(c,lv)
	return c:IsCanAddCounter(COUNTER_SPELL,1,false,LOCATION_MZONE) and c:IsLevel(lv)
		and c:IsAbleToHand() and (c:IsFaceup() or c:IsLocation(LOCATION_DECK))
end
function s.thop(e,tp,eg,ep,ev,re,r,rp)
	local lv=e:GetLabel()
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATOHAND)
	local g=Duel.SelectMatchingCard(tp,s.filter,tp,LOCATION_DECK|LOCATION_EXTRA,0,1,1,nil,lv)
	if #g>0 then
		Duel.SendtoHand(g,nil,REASON_EFFECT)
		Duel.ConfirmCards(1-tp,g)
	end
end
function s.desreptg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return not e:GetHandler():IsReason(REASON_RULE)
		and e:GetHandler():GetCounter(COUNTER_SPELL)>0 end
	return Duel.SelectEffectYesNo(tp,e:GetHandler(),96)
end
function s.desrepop(e,tp,eg,ep,ev,re,r,rp)
	e:GetHandler():RemoveCounter(ep,COUNTER_SPELL,1,REASON_EFFECT)
end