--No.79 BK 新星のカイザー
function c71921856.initial_effect(c)
	--xyz summon
	aux.AddXyzProcedure(c,nil,4,2)
	c:EnableReviveLimit()
	--material
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(71921856,0))
	e1:SetType(EFFECT_TYPE_IGNITION)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCountLimit(1)
	e1:SetTarget(c71921856.target)
	e1:SetOperation(c71921856.operation)
	c:RegisterEffect(e1)
	--atk
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_SINGLE)
	e2:SetProperty(EFFECT_FLAG_SINGLE_RANGE)
	e2:SetRange(LOCATION_MZONE)
	e2:SetCode(EFFECT_UPDATE_ATTACK)
	e2:SetValue(c71921856.atkval)
	c:RegisterEffect(e2)
	--spsummon
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(71921856,1))
	e3:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e3:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e3:SetCode(EVENT_TO_GRAVE)
	e3:SetProperty(EFFECT_FLAG_CARD_TARGET+EFFECT_FLAG_DAMAGE_STEP)
	e3:SetCondition(c71921856.spcon)
	e3:SetTarget(c71921856.sptg)
	e3:SetOperation(c71921856.spop)
	c:RegisterEffect(e3)
end
aux.xyz_number[71921856]=79
function c71921856.filter(c)
	return c:IsSetCard(0x1084) and c:IsType(TYPE_MONSTER) and c:IsCanOverlay()
end
function c71921856.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return e:GetHandler():IsType(TYPE_XYZ)
		and Duel.IsExistingMatchingCard(c71921856.filter,tp,LOCATION_HAND+LOCATION_GRAVE,0,1,nil) end
end
function c71921856.operation(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if not c:IsRelateToEffect(e) then return end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_XMATERIAL)
	local g=Duel.SelectMatchingCard(tp,aux.NecroValleyFilter(c71921856.filter),tp,LOCATION_HAND+LOCATION_GRAVE,0,1,1,nil)
	if g:GetCount()>0 then
		Duel.Overlay(c,g)
	end
end
function c71921856.atkval(e,c)
	return c:GetOverlayCount()*100
end
function c71921856.spcon(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	local ct=c:GetPreviousOverlayCountOnField()
	e:SetLabel(ct)
	return c:IsReason(REASON_DESTROY) and c:GetReasonPlayer()==1-tp
		and c:IsPreviousLocation(LOCATION_MZONE) and c:IsPreviousControler(tp) and ct>0
end
function c71921856.spfilter(c,e,tp)
	return c:IsLevelBelow(4) and c:IsSetCard(0x1084) and c:IsCanBeSpecialSummoned(e,0,tp,false,false)
end
function c71921856.sptg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_GRAVE) and chkc:IsControler(tp) and c71921856.spfilter(chkc,e,tp) end
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and Duel.IsExistingTarget(c71921856.spfilter,tp,LOCATION_GRAVE,0,1,nil,e,tp) end
	local ct=e:GetLabel()
	local ft=Duel.GetLocationCount(tp,LOCATION_MZONE)
	if ct>ft then ct=ft end
	if Duel.IsPlayerAffectedByEffect(tp,59822133) then ct=1 end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local g=Duel.SelectTarget(tp,c71921856.spfilter,tp,LOCATION_GRAVE,0,1,ct,nil,e,tp)
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,g,g:GetCount(),0,0)
end
function c71921856.spop(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetChainInfo(0,CHAININFO_TARGET_CARDS):Filter(Card.IsRelateToEffect,nil,e)
	local ft=Duel.GetLocationCount(tp,LOCATION_MZONE)
	if ft<=0 then return end
	if Duel.IsPlayerAffectedByEffect(tp,59822133) then ft=1 end
	if ft<g:GetCount() then return end
	if g:GetCount()>0 then
		Duel.SpecialSummon(g,0,tp,tp,false,false,POS_FACEUP)
	end
end
