--剛鬼ザ・グレート・オーガ
function c78437364.initial_effect(c)
	--link summon
	aux.AddLinkProcedure(c,aux.FilterBoolFunction(Card.IsSetCard,0xfc),2)
	c:EnableReviveLimit()
	--atkdown
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_FIELD)
	e1:SetCode(EFFECT_UPDATE_ATTACK)
	e1:SetRange(LOCATION_MZONE)
	e1:SetTargetRange(LOCATION_MZONE,LOCATION_MZONE)
	e1:SetValue(c78437364.atkval)
	c:RegisterEffect(e1)
	--destroy replace
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_CONTINUOUS+EFFECT_TYPE_SINGLE)
	e2:SetProperty(EFFECT_FLAG_SINGLE_RANGE)
	e2:SetCode(EFFECT_DESTROY_REPLACE)
	e2:SetRange(LOCATION_MZONE)
	e2:SetTarget(c78437364.desreptg)
	e2:SetOperation(c78437364.desrepop)
	c:RegisterEffect(e2)
end
function c78437364.atkval(e,c)
	local val=math.max(c:GetBaseDefense(),0)
	return val*-1
end
function c78437364.repfilter(c,tp)
	return c:IsControler(tp) and c:IsLocation(LOCATION_MZONE) and not c:IsStatus(STATUS_DESTROY_CONFIRMED)
end
function c78437364.desreptg(e,tp,eg,ep,ev,re,r,rp,chk)
	local c=e:GetHandler()
	if chk==0 then
		local g=c:GetLinkedGroup()
		return not c:IsReason(REASON_REPLACE) and g:IsExists(c78437364.repfilter,1,nil,tp)
	end
	if Duel.SelectYesNo(tp,aux.Stringid(78437364,0)) then
		local g=c:GetLinkedGroup()
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_DESREPLACE)
		local sg=g:FilterSelect(tp,c78437364.repfilter,1,1,nil,tp)
		Duel.SetTargetCard(sg)
		sg:GetFirst():SetStatus(STATUS_DESTROY_CONFIRMED,true)
		return true
	else return false end
end
function c78437364.desrepop(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetChainInfo(0,CHAININFO_TARGET_CARDS)
	g:GetFirst():SetStatus(STATUS_DESTROY_CONFIRMED,false)
	Duel.Destroy(g,REASON_EFFECT+REASON_REPLACE)
end
