--夢魔鏡の天魔－ネイロス
--Oneiros, the Dream Mirror Erlking
--Scripted by Eerie Code
local s,id=GetID()
function s.initial_effect(c)
	--Must be properly summoned before reviving
	c:EnableReviveLimit()
	--Fusion summon procedure
	Fusion.AddProcMixN(c,true,true,s.ffilter,2)
	--Also treated as a DARK monster while on the field
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetProperty(EFFECT_FLAG_SINGLE_RANGE)
	e1:SetCode(EFFECT_ADD_ATTRIBUTE)
	e1:SetRange(LOCATION_MZONE)
	e1:SetValue(ATTRIBUTE_DARK)
	c:RegisterEffect(e1)
	--Destroy 1 card on the field
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,0))
	e2:SetCategory(CATEGORY_DESTROY)
	e2:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_O)
	e2:SetCode(EVENT_RELEASE)
	e2:SetProperty(EFFECT_FLAG_DELAY+EFFECT_FLAG_CARD_TARGET)
	e2:SetRange(LOCATION_MZONE)
	e2:SetCountLimit(1,id)
	e2:SetCondition(s.descon)
	e2:SetTarget(s.destg)
	e2:SetOperation(s.desop)
	c:RegisterEffect(e2)
	--Special summon 1 "Dream Mirror" monster from GY
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id,1))
	e3:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e3:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e3:SetCode(EVENT_DESTROYED)
	e3:SetProperty(EFFECT_FLAG_DELAY)
	e3:SetCountLimit(1,{id,1})
	e3:SetCondition(s.spcon)
	e3:SetTarget(s.sptg)
	e3:SetOperation(s.spop)
	c:RegisterEffect(e3)
end
s.listed_names={id}
s.listed_series={SET_DREAM_MIRROR}
function s.ffilter(c,fc,sumtype,sp,sub,mg,sg)
	return c:IsSetCard(SET_DREAM_MIRROR,fc,sumtype,sp) and (not sg or sg:FilterCount(aux.TRUE,c)==0 or not sg:IsExists(Card.IsAttribute,1,c,c:GetAttribute(),fc,sumtype,sp))
end
function s.descfilter(c,tp)
	return c:IsPreviousLocation(LOCATION_MZONE) and c:GetPreviousControler()==tp
end
function s.descon(e,tp,eg,ep,ev,re,r,rp)
	return eg:IsExists(s.descfilter,1,nil,tp)
end
function s.destg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsOnField() end
	if chk==0 then return Duel.IsExistingTarget(aux.TRUE,tp,LOCATION_ONFIELD,LOCATION_ONFIELD,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_DESTROY)
	local g=Duel.SelectTarget(tp,aux.TRUE,tp,LOCATION_ONFIELD,LOCATION_ONFIELD,1,1,nil)
	Duel.SetOperationInfo(0,CATEGORY_DESTROY,g,1,0,0)
end
function s.desop(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc and tc:IsRelateToEffect(e) then
		Duel.Destroy(tc,REASON_EFFECT)
	end
end
function s.spcon(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	return c:IsReason(REASON_BATTLE)
		or (rp==1-tp and c:IsReason(REASON_EFFECT) and c:GetPreviousControler()==tp)
end
function s.filter(c,e,tp)
	return c:IsSetCard(SET_DREAM_MIRROR) and not c:IsCode(id) and c:IsCanBeSpecialSummoned(e,0,tp,false,false,POS_FACEUP)
end
function s.sptg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0 
		and Duel.IsExistingMatchingCard(s.filter,tp,LOCATION_GRAVE,0,1,nil,e,tp) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_GRAVE)
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,0,1,1,nil,e,tp)
	if #g>0 then
		Duel.SpecialSummon(g,0,tp,tp,false,false,POS_FACEUP)
	end
end