Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Cannot be destroyed by battle. If this card is in face-up Defense Position, destroy it. If this card is Normal Summoned: Place 1 Fog Counter on it for each "Cloudian" monster on the field. You can remove 2 Fog Counters from this card, then target 1 monster on the field; destroy that target.
--雲魔物－キロスタス
--Cloudian - Cirrostratus
local s,id=GetID()
function s.initial_effect(c)
	--battle indestructable
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetCode(EFFECT_INDESTRUCTABLE_BATTLE)
	e1:SetValue(1)
	c:RegisterEffect(e1)
	--selfdes
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_SINGLE)
	e2:SetProperty(EFFECT_FLAG_SINGLE_RANGE)
	e2:SetRange(LOCATION_MZONE)
	e2:SetCode(EFFECT_SELF_DESTROY)
	e2:SetCondition(s.sdcon)
	c:RegisterEffect(e2)
	--counter
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id,0))
	e3:SetCategory(CATEGORY_COUNTER)
	e3:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_F)
	e3:SetCode(EVENT_SUMMON_SUCCESS)
	e3:SetOperation(s.addc)
	c:RegisterEffect(e3)
	--destroy
	local e4=Effect.CreateEffect(c)
	e4:SetDescription(aux.Stringid(id,1))
	e4:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e4:SetCategory(CATEGORY_DESTROY)
	e4:SetType(EFFECT_TYPE_IGNITION)
	e4:SetRange(LOCATION_MZONE)
	e4:SetCost(s.descost)
	e4:SetTarget(s.destg)
	e4:SetOperation(s.desop)
	c:RegisterEffect(e4)
end
s.listed_series={SET_CLOUDIAN}
s.counter_place_list={COUNTER_FOG}
function s.sdcon(e)
	return e:GetHandler():IsPosition(POS_FACEUP_DEFENSE)
end
function s.cfilter(c)
	return c:IsFaceup() and c:IsSetCard(SET_CLOUDIAN)
end
function s.addc(e,tp,eg,ep,ev,re,r,rp)
	if e:GetHandler():IsRelateToEffect(e) then
		local ct=Duel.GetMatchingGroupCount(s.cfilter,tp,LOCATION_MZONE,LOCATION_MZONE,nil)
		e:GetHandler():AddCounter(COUNTER_NEED_ENABLE+COUNTER_FOG,ct)
	end
end
function s.descost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return e:GetHandler():IsCanRemoveCounter(tp,COUNTER_FOG,2,REASON_COST) end
	e:GetHandler():RemoveCounter(tp,COUNTER_FOG,2,REASON_COST)
end
function s.destg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_MZONE) end
	if chk==0 then return Duel.IsExistingTarget(aux.TRUE,tp,LOCATION_MZONE,LOCATION_MZONE,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_DESTROY)
	local g=Duel.SelectTarget(tp,aux.TRUE,tp,LOCATION_MZONE,LOCATION_MZONE,1,1,nil)
	Duel.SetOperationInfo(0,CATEGORY_DESTROY,g,1,0,0)
end
function s.desop(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc:IsRelateToEffect(e) then
		Duel.Destroy(tc,REASON_EFFECT)
	end
end