--海皇子 ネプトアビス
---@param c Card
function c21565445.initial_effect(c)
	--search
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(21565445,0))
	e1:SetCategory(CATEGORY_TOHAND+CATEGORY_SEARCH)
	e1:SetType(EFFECT_TYPE_IGNITION)
	e1:SetCountLimit(1,21565445)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCost(c21565445.cost)
	e1:SetTarget(c21565445.target)
	e1:SetOperation(c21565445.operation)
	c:RegisterEffect(e1)
	--spsummon
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(21565445,1))
	e2:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e2:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_F)
	e2:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e2:SetCode(EVENT_TO_GRAVE)
	e2:SetCountLimit(1,21565446)
	e2:SetCondition(c21565445.spcon)
	e2:SetTarget(c21565445.sptg)
	e2:SetOperation(c21565445.spop)
	c:RegisterEffect(e2)
end
function c21565445.cfilter(c,tp)
	return c:IsSetCard(0x77) and c:IsType(TYPE_MONSTER) and not c:IsCode(21565445) and c:IsAbleToGraveAsCost()
		and Duel.IsExistingMatchingCard(c21565445.filter,tp,LOCATION_DECK,0,1,c)
end
function c21565445.cost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(c21565445.cfilter,tp,LOCATION_DECK,0,1,nil,tp) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TOGRAVE)
	local g=Duel.SelectMatchingCard(tp,c21565445.cfilter,tp,LOCATION_DECK,0,1,1,nil,tp)
	Duel.SendtoGrave(g,REASON_COST)
end
function c21565445.filter(c)
	return c:IsSetCard(0x77) and not c:IsCode(21565445) and c:IsAbleToHand()
end
function c21565445.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	Duel.SetOperationInfo(0,CATEGORY_TOHAND,nil,1,tp,LOCATION_DECK)
end
function c21565445.operation(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATOHAND)
	local g=Duel.SelectMatchingCard(tp,c21565445.filter,tp,LOCATION_DECK,0,1,1,nil)
	if g:GetCount()>0 then
		Duel.SendtoHand(g,nil,REASON_EFFECT)
		Duel.ConfirmCards(1-tp,g)
	end
end
function c21565445.spcon(e,tp,eg,ep,ev,re,r,rp)
	return e:GetHandler():IsReason(REASON_COST) and re:IsActivated() and re:IsActiveType(TYPE_MONSTER)
		and re:GetHandler():IsAttribute(ATTRIBUTE_WATER)
end
function c21565445.spfilter(c,e,tp)
	return c:IsSetCard(0x77) and not c:IsCode(21565445) and c:IsCanBeSpecialSummoned(e,0,tp,false,false)
end
function c21565445.sptg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_GRAVE) and chkc:IsControler(tp) and c21565445.spfilter(chkc,e,tp) end
	if chk==0 then return true end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local g=Duel.SelectTarget(tp,c21565445.spfilter,tp,LOCATION_GRAVE,0,1,1,nil,e,tp)
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,g,1,0,0)
end
function c21565445.spop(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc and tc:IsRelateToEffect(e) then
		Duel.SpecialSummon(tc,0,tp,tp,false,false,POS_FACEUP)
	end
end
