Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
3+ Effect Monsters Cannot be destroyed by card effects. Once per turn: You can send 1 card from your Spell & Trap Zone to the GY; Special Summon from either GY to your field, 1 monster that was destroyed and sent there this turn, but negate its effects. Once per turn (Quick Effect): You can target 1 monster on the field; change it to face-up Defense Position. Your opponent cannot activate cards or effects in response to this effect's activation.
--ヴァレルガード・ドラゴン
--Borrelguard Dragon
local s,id=GetID()
function s.initial_effect(c)
	--link summon
	Link.AddProcedure(c,aux.FilterBoolFunctionEx(Card.IsType,TYPE_EFFECT),3)
	c:EnableReviveLimit()
	--cannot be destroyed
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetCode(EFFECT_INDESTRUCTABLE_EFFECT)
	e1:SetProperty(EFFECT_FLAG_SINGLE_RANGE)
	e1:SetRange(LOCATION_MZONE)
	e1:SetValue(1)
	c:RegisterEffect(e1)
	--special summon
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,0))
	e2:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e2:SetType(EFFECT_TYPE_IGNITION)
	e2:SetRange(LOCATION_MZONE)
	e2:SetCountLimit(1)
	e2:SetCost(s.spcost)
	e2:SetTarget(s.sptg)
	e2:SetOperation(s.spop)
	c:RegisterEffect(e2)
	--position
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id,1))
	e3:SetCategory(CATEGORY_POSITION)
	e3:SetType(EFFECT_TYPE_QUICK_O)
	e3:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e3:SetCode(EVENT_FREE_CHAIN)
	e3:SetRange(LOCATION_MZONE)
	e3:SetCountLimit(1)
	e3:SetHintTiming(0,TIMINGS_CHECK_MONSTER_E)
	e3:SetTarget(s.postg)
	e3:SetOperation(s.posop)
	c:RegisterEffect(e3)
end
function s.costfilter(c)
	return c:IsAbleToGraveAsCost() and c:GetSequence()<5
end
function s.spcost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.costfilter,tp,LOCATION_SZONE,0,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TOGRAVE)
	local g=Duel.SelectMatchingCard(tp,s.costfilter,tp,LOCATION_SZONE,0,1,1,nil)
	Duel.SendtoGrave(g,REASON_COST)
end
function s.spfilter(c,e,tp,tid)
	return c:GetTurnID()==tid and (c:GetReason()&REASON_DESTROY)~=0 and c:IsCanBeSpecialSummoned(e,0,tp,false,false)
end
function s.sptg(e,tp,eg,ep,ev,re,r,rp,chk)
	local tid=Duel.GetTurnCount()
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and Duel.IsExistingMatchingCard(s.spfilter,tp,LOCATION_GRAVE,LOCATION_GRAVE,1,nil,e,tp,tid) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,PLAYER_EITHER,LOCATION_GRAVE)
end
function s.spop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	local tid=Duel.GetTurnCount()
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local tc=Duel.SelectMatchingCard(tp,s.spfilter,tp,LOCATION_GRAVE,LOCATION_GRAVE,1,1,nil,e,tp,tid):GetFirst()
	if tc and Duel.SpecialSummonStep(tc,0,tp,tp,false,false,POS_FACEUP) then
		local e1=Effect.CreateEffect(c)
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_DISABLE)
		e1:SetReset(RESET_EVENT|RESETS_STANDARD)
		tc:RegisterEffect(e1,true)
		local e2=Effect.CreateEffect(c)
		e2:SetType(EFFECT_TYPE_SINGLE)
		e2:SetCode(EFFECT_DISABLE_EFFECT)
		e2:SetReset(RESET_EVENT|RESETS_STANDARD)
		tc:RegisterEffect(e2,true)
	end
	Duel.SpecialSummonComplete()
end
function s.posfilter(c)
	return c:IsCanChangePosition() and not c:IsPosition(POS_FACEUP_DEFENSE)
end
function s.postg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_MZONE) and s.posfilter(chkc) end
	if chk==0 then return Duel.IsExistingTarget(s.posfilter,tp,LOCATION_MZONE,LOCATION_MZONE,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_POSCHANGE)
	local g=Duel.SelectTarget(tp,s.posfilter,tp,LOCATION_MZONE,LOCATION_MZONE,1,1,nil)
	Duel.SetOperationInfo(0,CATEGORY_POSITION,g,#g,0,0)
	Duel.SetChainLimit(s.chlimit)
end
function s.chlimit(e,ep,tp)
	return tp==ep
end
function s.posop(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc:IsRelateToEffect(e) and not tc:IsPosition(POS_FACEUP_DEFENSE) then
		Duel.ChangePosition(tc,POS_FACEUP_DEFENSE)
	end
end