Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
2 Level 4 DARK Dragon monsters Neither player can target this Xyz Summoned card with monster effects, except its own. Once per turn: You can detach 1 material from this card, then target 1 face-up monster on the field; it loses 600 ATK/DEF, then, you can Special Summon 1 "Borrel" monster from your GY, but banish it during the End Phase, also you cannot Special Summon other monsters or attack directly for the rest of this turn.
--ヴァレルロード・X・ドラゴン
--Borreload eXcharge Dragon
--Scripted by Eerie Code
local s,id=GetID()
function s.initial_effect(c)
	c:EnableReviveLimit()
	Xyz.AddProcedure(c,s.mfilter,4,2)
	--Cannot be targeted by monsters effects
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetCode(EFFECT_CANNOT_BE_EFFECT_TARGET)
	e1:SetProperty(EFFECT_FLAG_SINGLE_RANGE)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCondition(s.tgcon)
	e1:SetValue(s.tgval)
	c:RegisterEffect(e1)
	--Decrease ATK/DEF and special summon 1 "Borrel" monster
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,0))
	e2:SetCategory(CATEGORY_ATKCHANGE+CATEGORY_DEFCHANGE+CATEGORY_SPECIAL_SUMMON)
	e2:SetType(EFFECT_TYPE_IGNITION)
	e2:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e2:SetRange(LOCATION_MZONE)
	e2:SetCountLimit(1)
	e2:SetCost(Cost.DetachFromSelf(1))
	e2:SetTarget(s.atktg)
	e2:SetOperation(s.atkop)
	c:RegisterEffect(e2)
end
s.listed_series={SET_BORREL}
function s.mfilter(c,lc,sumtype,tp)
	return c:IsRace(RACE_DRAGON,lc,sumtype,tp) and c:IsAttribute(ATTRIBUTE_DARK,lc,sumtype,tp)
end
function s.tgcon(e)
	return e:GetHandler():IsXyzSummoned()
end
function s.tgval(e,re,rp)
	local rc=re:GetHandler()
	return re:IsMonsterEffect() and e:GetHandler()~=rc
end
function s.atkfilter(c)
	return c:IsFaceup() and (c:GetAttack()>0 or c:GetDefense()>0)
end
function s.atktg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_MZONE) and s.atkfilter(chkc) end
	if chk==0 then return Duel.IsExistingTarget(s.atkfilter,tp,LOCATION_MZONE,LOCATION_MZONE,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TARGET)
	Duel.SelectTarget(tp,s.atkfilter,tp,LOCATION_MZONE,LOCATION_MZONE,1,1,nil)
	Duel.SetPossibleOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_GRAVE)
end
function s.spfilter(c,e,tp)
	return c:IsSetCard(SET_BORREL) and c:IsCanBeSpecialSummoned(e,0,tp,false,false)
end
function s.atkop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	local tc=Duel.GetFirstTarget()
	if tc:IsRelateToEffect(e) and tc:IsFaceup() and not tc:IsImmuneToEffect(e) then
		local e1=Effect.CreateEffect(c)
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_UPDATE_ATTACK)
		e1:SetValue(-600)
		e1:SetReset(RESET_EVENT|RESETS_STANDARD)
		tc:RegisterEffect(e1)
		local e2=e1:Clone()
		e2:SetCode(EFFECT_UPDATE_DEFENSE)
		tc:RegisterEffect(e2)
		local g=Duel.GetMatchingGroup(aux.NecroValleyFilter(s.spfilter),tp,LOCATION_GRAVE,0,nil,e,tp)
		if #g>0 and Duel.GetLocationCount(tp,LOCATION_MZONE)>0 and Duel.SelectYesNo(tp,aux.Stringid(id,1)) then
			Duel.BreakEffect()
			Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
			local sc=g:Select(tp,1,1,nil):GetFirst()
			if Duel.SpecialSummon(sc,0,tp,tp,false,false,POS_FACEUP)~=0 then
				sc:RegisterFlagEffect(id,RESET_EVENT|RESETS_STANDARD,0,1)
				local e3=Effect.CreateEffect(c)
				e3:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_CONTINUOUS)
				e3:SetCode(EVENT_PHASE+PHASE_END)
				e3:SetCountLimit(1)
				e3:SetProperty(EFFECT_FLAG_IGNORE_IMMUNE)
				e3:SetLabelObject(sc)
				e3:SetCondition(s.rmcon)
				e3:SetOperation(s.rmop)
				Duel.RegisterEffect(e3,tp)
			end
		end
	end
	local ge1=Effect.CreateEffect(c)
	ge1:SetType(EFFECT_TYPE_FIELD)
	ge1:SetCode(EFFECT_CANNOT_SPECIAL_SUMMON)
	ge1:SetProperty(EFFECT_FLAG_OATH+EFFECT_FLAG_PLAYER_TARGET)
	ge1:SetTargetRange(1,0)
	ge1:SetReset(RESET_PHASE|PHASE_END)
	Duel.RegisterEffect(ge1,tp)
	local ge2=Effect.CreateEffect(c)
	ge2:SetType(EFFECT_TYPE_FIELD)
	ge2:SetCode(EFFECT_CANNOT_DIRECT_ATTACK)
	ge2:SetProperty(EFFECT_FLAG_OATH+EFFECT_FLAG_IGNORE_IMMUNE)
	ge2:SetTargetRange(LOCATION_MZONE,0)
	ge2:SetReset(RESET_PHASE|PHASE_END)
	Duel.RegisterEffect(ge2,tp)
	aux.RegisterClientHint(e:GetHandler(),nil,tp,1,0,aux.Stringid(id,2),nil)
end
function s.rmcon(e,tp,eg,ep,ev,re,r,rp)
	local tc=e:GetLabelObject()
	if tc:GetFlagEffect(id)~=0 then
		return true
	else
		e:Reset()
		return false
	end
end
function s.rmop(e,tp,eg,ep,ev,re,r,rp)
	local tc=e:GetLabelObject()
	Duel.Remove(tc,POS_FACEUP,REASON_EFFECT)
end