--ギアギガント X
function c28912357.initial_effect(c)
	--xyz summon
	aux.AddXyzProcedure(c,aux.FilterBoolFunction(Card.IsRace,RACE_MACHINE),4,2)
	c:EnableReviveLimit()
	--search
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_TOHAND+CATEGORY_SEARCH)
	e1:SetDescription(aux.Stringid(28912357,0))
	e1:SetType(EFFECT_TYPE_IGNITION)
	e1:SetCountLimit(1)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCost(c28912357.cost)
	e1:SetTarget(c28912357.target)
	e1:SetOperation(c28912357.operation)
	c:RegisterEffect(e1)
	--spsummon
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(28912357,1))
	e2:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e2:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e2:SetProperty(EFFECT_FLAG_CARD_TARGET+EFFECT_FLAG_DAMAGE_STEP)
	e2:SetCode(EVENT_TO_GRAVE)
	e2:SetCondition(c28912357.spcon)
	e2:SetTarget(c28912357.sptg)
	e2:SetOperation(c28912357.spop)
	c:RegisterEffect(e2)
	local e3=e2:Clone()
	e3:SetCode(EVENT_REMOVE)
	c:RegisterEffect(e3)
	local e4=e2:Clone()
	e4:SetCode(EVENT_TO_DECK)
	c:RegisterEffect(e4)
end
function c28912357.cost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return e:GetHandler():CheckRemoveOverlayCard(tp,1,REASON_COST) end
	e:GetHandler():RemoveOverlayCard(tp,1,1,REASON_COST)
end
function c28912357.filter(c)
	return c:IsLevelBelow(4) and c:IsRace(RACE_MACHINE) and c:IsAbleToHand()
end
function c28912357.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(c28912357.filter,tp,LOCATION_GRAVE+LOCATION_DECK,0,1,nil) end
	Duel.SetOperationInfo(0,CATEGORY_TOHAND,nil,1,tp,LOCATION_GRAVE+LOCATION_DECK)
end
function c28912357.operation(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATOHAND)
	local g=Duel.SelectMatchingCard(tp,c28912357.filter,tp,LOCATION_GRAVE+LOCATION_DECK,0,1,1,nil)
	if g:GetCount()>0 then
		if g:GetFirst():IsHasEffect(EFFECT_NECRO_VALLEY) and Duel.IsChainDisablable(0) then
			Duel.NegateEffect(0)
			return
		end
		Duel.SendtoHand(g,nil,REASON_EFFECT)
		Duel.ConfirmCards(1-tp,g)
		Duel.ShuffleDeck(tp)
	end
end
function c28912357.spcon(e,tp,eg,ep,ev,re,r,rp)
	return e:GetHandler():IsPreviousPosition(POS_FACEUP) and e:GetHandler():IsPreviousLocation(LOCATION_ONFIELD)
end
function c28912357.spfilter(c,e,tp)
	return c:IsLevelBelow(3) and c:IsSetCard(0x72) and c:IsCanBeSpecialSummoned(e,0,tp,false,false)
end
function c28912357.sptg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_GRAVE) and chkc:IsControler(tp) and c28912357.spfilter(chkc,e,tp) end
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and Duel.IsExistingTarget(c28912357.spfilter,tp,LOCATION_GRAVE,0,1,nil,e,tp) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local g=Duel.SelectTarget(tp,c28912357.spfilter,tp,LOCATION_GRAVE,0,1,1,nil,e,tp)
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,g,1,0,0)
end
function c28912357.spop(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc:IsRelateToEffect(e) then
		Duel.SpecialSummon(tc,0,tp,tp,false,false,POS_FACEUP)
	end
end
