--登龙华海泷门
local s,id,o=GetID()
function s.initial_effect(c)
	c:SetUniqueOnField(1,0,id)
	--activate
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	c:RegisterEffect(e1)
	--indes
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_FIELD)
	e2:SetCode(EFFECT_INDESTRUCTABLE_BATTLE)
	e2:SetRange(LOCATION_SZONE)
	e2:SetTargetRange(LOCATION_MZONE,0)
	e2:SetTarget(aux.TargetBoolFunction(Card.IsSetCard,0x2c1))
	e2:SetValue(1)
	c:RegisterEffect(e2)
	--to hand
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id,1))
	e3:SetCategory(CATEGORY_TOHAND)
	e3:SetType(EFFECT_TYPE_QUICK_O)
	e3:SetCode(EVENT_FREE_CHAIN)
	e3:SetProperty(EFFECT_FLAG_DAMAGE_STEP+EFFECT_FLAG_DAMAGE_CAL)
	e3:SetRange(LOCATION_MZONE)
	e3:SetCountLimit(1)
	e3:SetCondition(s.thcon)
	e3:SetCost(s.thcost)
	e3:SetTarget(s.thtg)
	e3:SetOperation(s.thop)
	local e4=Effect.CreateEffect(c)
	e4:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_GRANT)
	e4:SetRange(LOCATION_SZONE)
	e4:SetTargetRange(LOCATION_MZONE,0)
	e4:SetTarget(s.eftg)
	e4:SetLabelObject(e3)
	c:RegisterEffect(e4)
end
function s.thcon(e,tp,eg,ep,ev,re,r,rp)
	return Duel.GetTurnPlayer()==1-tp
end
function s.costfilter(c,tp)
	return c:IsSetCard(0x2c1) and c:IsAbleToDeckAsCost()
		and bit.band(c:GetType(),TYPE_SPELL+TYPE_CONTINUOUS)==TYPE_SPELL+TYPE_CONTINUOUS
		and Duel.IsExistingMatchingCard(Card.IsAbleToHand,tp,LOCATION_ONFIELD,LOCATION_ONFIELD,1,c)
end
function s.thcost(e,tp,eg,ep,ev,re,r,rp,chk)
	local c=e:GetHandler()
	if chk==0 then return Duel.IsExistingMatchingCard(s.costfilter,tp,LOCATION_ONFIELD,0,1,nil,tp) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TODECK)
	local g=Duel.SelectMatchingCard(tp,s.costfilter,tp,LOCATION_ONFIELD,0,1,1,nil,tp)
	Duel.SendtoDeck(g,nil,SEQ_DECKBOTTOM,REASON_COST)
end
function s.thtg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsOnField() and chkc:IsAbleToHand() end
	if chk==0 then return Duel.IsExistingTarget(Card.IsAbleToHand,tp,LOCATION_ONFIELD,LOCATION_ONFIELD,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_RTOHAND)
	local g=Duel.SelectTarget(tp,Card.IsAbleToHand,tp,LOCATION_ONFIELD,LOCATION_ONFIELD,1,1,nil)
	Duel.SetOperationInfo(0,CATEGORY_TOHAND,g,1,0,0)
end
function s.thop(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc:IsRelateToEffect(e) then
		Duel.SendtoHand(tc,nil,REASON_EFFECT)
	end
end
function s.eftg(e,c)
	return c:IsLevelAbove(10) and c:GetOriginalRace()==RACE_SEASERPENT
		or c:IsSetCard(0x2c1) and c:IsType(TYPE_PENDULUM)
end