--竜華三界流転
local s,id,o=GetID()
function s.initial_effect(c)
	--special summon
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetHintTiming(0,TIMINGS_CHECK_MONSTER+TIMING_END_PHASE)
	e1:SetCountLimit(1,id)
	e1:SetTarget(s.sptg)
	e1:SetOperation(s.spop)
	c:RegisterEffect(e1)
	--draw
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,1))
	e2:SetCategory(CATEGORY_TODECK+CATEGORY_DRAW)
	e2:SetType(EFFECT_TYPE_QUICK_O)
	e2:SetCode(EVENT_FREE_CHAIN)
	e2:SetRange(LOCATION_GRAVE)
	e2:SetHintTiming(0,TIMING_END_PHASE)
	e2:SetCountLimit(1,id+o)
	e2:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e2:SetCost(aux.bfgcost)
	e2:SetTarget(s.drtg)
	e2:SetOperation(s.drop)
	c:RegisterEffect(e2)
end
function s.spfilter(c,e,tp)
	return c:IsFaceupEx() and c:IsSetCard(0x2c1)
		and c:IsCanBeSpecialSummoned(e,0,tp,false,false)
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.spfilter,tp,LOCATION_HAND+LOCATION_DECK+LOCATION_GRAVE,0,1,nil,e,tp) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_HAND+LOCATION_DECK+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.spfilter),tp,LOCATION_HAND+LOCATION_DECK+LOCATION_GRAVE,0,1,1,nil,e,tp)
	if #g>0 and Duel.SpecialSummon(g,0,tp,tp,false,false,POS_FACEUP)>0 then
		local tc=g:GetFirst()
		if not tc:IsLocation(LOCATION_MZONE) then return end
		local c=e:GetHandler()
		local fid=c:GetFieldID()
		tc:RegisterFlagEffect(id,RESET_EVENT+RESETS_STANDARD,0,1,fid)
		local e1=Effect.CreateEffect(c)
		e1:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_CONTINUOUS)
		e1:SetProperty(EFFECT_FLAG_IGNORE_IMMUNE)
		e1:SetCode(EVENT_PHASE+PHASE_END)
		e1:SetCountLimit(1)
		e1:SetLabel(fid)
		e1:SetLabelObject(tc)
		e1:SetCondition(s.thcon)
		e1:SetOperation(s.thop)
		Duel.RegisterEffect(e1,tp)
	end
end
function s.thcon(e,tp,eg,ep,ev,re,r,rp)
	local tc=e:GetLabelObject()
	if tc:GetFlagEffectLabel(id)~=e:GetLabel() then
		e:Reset()
		return false
	else
		return true
	end
end
function s.thop(e,tp,eg,ep,ev,re,r,rp)
	Duel.SendtoHand(e:GetLabelObject(),nil,REASON_EFFECT)
end
function s.cfilter(c)
	return bit.band(c:GetType(),TYPE_SPELL+TYPE_CONTINUOUS)==TYPE_SPELL+TYPE_CONTINUOUS
		and c:IsFaceupEx() and c:IsSetCard(0x2c1) and c:IsAbleToDeck()
end
function s.drtg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_GRAVE+LOCATION_REMOVED+LOCATION_ONFIELD) and chkc:IsControler(tp) and s.cfilter(chkc) end
	if chk==0 then return Duel.IsExistingTarget(s.cfilter,tp,LOCATION_ONFIELD+LOCATION_GRAVE+LOCATION_REMOVED,0,1,nil)
		and Duel.IsPlayerCanDraw(tp,1) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TODECK)
	local g=Duel.SelectTarget(tp,s.cfilter,tp,LOCATION_ONFIELD+LOCATION_GRAVE+LOCATION_REMOVED,0,1,1,nil)
	Duel.SetOperationInfo(0,CATEGORY_TODECK,g,1,0,0)
	Duel.SetOperationInfo(0,CATEGORY_DRAW,nil,0,tp,1)
end
function s.drop(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetTargetsRelateToChain()
	if g:IsExists(Card.IsHasEffect,1,nil,EFFECT_NECRO_VALLEY) then return end
	if Duel.SendtoDeck(g,nil,SEQ_DECKBOTTOM,REASON_EFFECT)<1
		or not g:IsExists(Card.IsLocation,1,nil,LOCATION_DECK+LOCATION_EXTRA) then return end
	Duel.BreakEffect()
	Duel.Draw(tp,1,REASON_EFFECT)
end