--天地晦冥
--Tenchi Kaimei
--Scripted by Hatter
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	c:RegisterEffect(e1)
	--Destroy 1 card
	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:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e2:SetCode(EVENT_BATTLE_DAMAGE)
	e2:SetRange(LOCATION_FZONE)
	e2:SetCondition(s.descon)
	e2:SetTarget(s.destg)
	e2:SetOperation(s.desop)
	c:RegisterEffect(e2)
	--Special Summon "Ninja" monsters with different names
	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:SetProperty(EFFECT_FLAG_DELAY+EFFECT_FLAG_CARD_TARGET)
	e3:SetCode(EVENT_LEAVE_FIELD)
	e3:SetCondition(s.spcon)
	e3:SetTarget(s.sptg)
	e3:SetOperation(s.spop)
	c:RegisterEffect(e3)
end
s.listed_series={SET_NINJITSU_ART,SET_NINJA}
function s.descon(e,tp,eg,ep,ev,re,r,rp)
	local rc=eg:GetFirst()
	return ep==1-tp and rc:IsControler(tp) and rc:IsSetCard(SET_NINJA)
end
function s.destg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsControler(1-tp) and chkc:IsOnField() end
	if chk==0 then return Duel.IsExistingTarget(nil,tp,0,LOCATION_ONFIELD,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_DESTROY)
	local g=Duel.SelectTarget(tp,nil,tp,0,LOCATION_ONFIELD,1,1,nil)
	Duel.SetOperationInfo(0,CATEGORY_DESTROY,g,#g,0,0)
end
function s.desop(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if 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 rp==1-tp and c:IsReason(REASON_EFFECT) and c:IsLocation(LOCATION_GRAVE|LOCATION_REMOVED)
		and c:IsPreviousPosition(POS_FACEUP) and c:IsPreviousControler(tp) and c:IsPreviousLocation(LOCATION_FZONE)
end
function s.spfilter(c,e,tp)
	return c:IsSetCard(SET_NINJA) and c:IsCanBeEffectTarget(e)
		and c:IsCanBeSpecialSummoned(e,0,tp,false,false,POS_FACEDOWN_DEFENSE)
end
function s.sptg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return false end
	local g=Duel.GetMatchingGroup(s.spfilter,tp,LOCATION_GRAVE,0,nil,e,tp)
	local ft=Duel.GetLocationCount(tp,LOCATION_MZONE)
	if Duel.IsPlayerAffectedByEffect(tp,CARD_BLUEEYES_SPIRIT) then ft=math.min(ft,1) end
	if chk==0 then return ft>0 and #g>0 end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local tg=aux.SelectUnselectGroup(g,e,tp,1,ft,aux.dncheck,1,tp,HINTMSG_SPSUMMON)
	Duel.SetTargetCard(tg)
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,tg,#tg,0,0)
end
function s.spop(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetTargetCards(e)
	if #g>0 then
		Duel.SpecialSummon(g,0,tp,tp,false,false,POS_FACEDOWN_DEFENSE)
	end
end