--レッドアイズ・ダークネスメタルドラゴン
--Red-Eyes Darkness Metal Dragon, pre-errata
local s,id=GetID()
function s.initial_effect(c)
	--special summon procedure
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_FIELD)
	e1:SetCode(EFFECT_SPSUMMON_PROC)
	e1:SetProperty(EFFECT_FLAG_UNCOPYABLE)
	e1:SetRange(LOCATION_HAND)
	e1:SetCondition(s.spcon1)
	e1:SetTarget(s.sptg1)
	e1:SetOperation(s.spop1)
	c:RegisterEffect(e1)
	--special summon a dragon
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,0))
	e2:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e2:SetType(EFFECT_TYPE_IGNITION)
	e2:SetCountLimit(1)
	e2:SetRange(LOCATION_MZONE)
	e2:SetTarget(s.sptg)
	e2:SetOperation(s.spop)
	c:RegisterEffect(e2)
end
function s.spfilter(c,ft)
	return c:IsFaceup() and c:IsRace(RACE_DRAGON) and c:IsAbleToRemoveAsCost() and (ft>0 or c:GetSequence()<5)
end
function s.spcon1(e,c)
	if c==nil then return true end
	local tp=c:GetControler()
	local ft=Duel.GetLocationCount(tp,LOCATION_MZONE)
	local rg=Duel.GetMatchingGroup(s.spfilter,tp,LOCATION_MZONE,0,nil,ft)
	return ft>-1 and #rg>0 and aux.SelectUnselectGroup(rg,e,tp,1,1,nil,0)
end
function s.sptg1(e,tp,eg,ep,ev,re,r,rp,c)
	local c=e:GetHandler()
	local g=nil
	local rg=Duel.GetMatchingGroup(s.spfilter,tp,LOCATION_MZONE,0,nil,Duel.GetLocationCount(tp,LOCATION_MZONE))
	local g=aux.SelectUnselectGroup(rg,e,tp,1,1,nil,1,tp,HINTMSG_REMOVE,nil,nil,true)
	if #g>0 then
		g:KeepAlive()
		e:SetLabelObject(g)
		return true
	end
	return false
end
function s.spop1(e,tp,eg,ep,ev,re,r,rp,c)
	local g=e:GetLabelObject()
	if not g then return end
	Duel.Remove(g,POS_FACEUP,REASON_COST)
	g:DeleteGroup()
end
function s.filter(c,e,tp)
	return c:IsRace(RACE_DRAGON) and not c:IsCode(88264978) and c:IsCanBeSpecialSummoned(e,0,tp,false,false)
end
function s.sptg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and Duel.IsExistingMatchingCard(s.filter,tp,LOCATION_GRAVE|LOCATION_HAND,0,1,nil,e,tp) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_GRAVE|LOCATION_HAND)
end
function s.spop(e,tp,eg,ep,ev,re,r,rp)
	if Duel.GetLocationCount(tp,LOCATION_MZONE)<=0 then return end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local g=Duel.SelectMatchingCard(tp,aux.NecroValleyFilter(s.filter),tp,LOCATION_GRAVE|LOCATION_HAND,0,1,1,nil,e,tp)
	if #g>0 then
		Duel.SpecialSummon(g,0,tp,tp,false,false,POS_FACEUP)
	end
end