--氷水底イニオン・クレイドル
function c7142724.initial_effect(c)
	--activate
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_TOHAND)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetCountLimit(1,7142724+EFFECT_COUNT_CODE_OATH)
	e1:SetOperation(c7142724.activate)
	c:RegisterEffect(e1)
	--atk down
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(7142724,1))
	e2:SetCategory(CATEGORY_ATKCHANGE)
	e2:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_O)
	e2:SetCode(EVENT_SUMMON_SUCCESS)
	e2:SetProperty(EFFECT_FLAG_DELAY+EFFECT_FLAG_CARD_TARGET)
	e2:SetRange(LOCATION_FZONE)
	e2:SetCountLimit(1,EFFECT_COUNT_CODE_SINGLE)
	e2:SetTarget(c7142724.adtg)
	e2:SetOperation(c7142724.adop)
	c:RegisterEffect(e2)
	local e3=e2:Clone()
	e3:SetCode(EVENT_SPSUMMON_SUCCESS)
	c:RegisterEffect(e3)
end
function c7142724.thfilter(c)
	return c:IsSetCard(0x16c) and c:IsType(TYPE_MONSTER) and c:IsAbleToHand()
		and (c:IsLocation(LOCATION_GRAVE) or c:IsFaceup())
end
function c7142724.activate(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetMatchingGroup(aux.NecroValleyFilter(c7142724.thfilter),tp,LOCATION_GRAVE+LOCATION_REMOVED,0,nil)
	if g:GetCount()>0 and Duel.SelectYesNo(tp,aux.Stringid(7142724,0)) then
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATOHAND)
		local sg=g:Select(tp,1,1,nil)
		Duel.SendtoHand(sg,nil,REASON_EFFECT)
		Duel.ConfirmCards(1-tp,sg)
	end
end
function c7142724.adfilter(c)
	return c:IsAttribute(ATTRIBUTE_WATER) and c:IsFaceup() and c:GetBaseAttack()>0
end
function c7142724.adtg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_MZONE) and chkc:IsControler(tp) and c7142724.adfilter(chkc) end
	if chk==0 then return Duel.IsExistingTarget(c7142724.adfilter,tp,LOCATION_MZONE,0,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TARGET)
	local g=Duel.SelectTarget(tp,c7142724.adfilter,tp,LOCATION_MZONE,0,1,1,nil)
	Duel.SetOperationInfo(0,CATEGORY_ATKCHANGE,g,1,0,0)
end
function c7142724.adop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	local tc=Duel.GetFirstTarget()
	if not (tc:IsRelateToEffect(e) and tc:IsFaceup()) then return end
	local g=Duel.GetMatchingGroup(Card.IsFaceup,tp,0,LOCATION_MZONE,nil)
	g:AddCard(tc)
	local tc1=g:GetFirst()
	while tc1 do
		local e1=Effect.CreateEffect(c)
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_UPDATE_ATTACK)
		e1:SetReset(RESET_EVENT+RESETS_STANDARD+RESET_PHASE+PHASE_END)
		e1:SetValue(-tc:GetBaseAttack())
		tc1:RegisterEffect(e1)
		tc1=g:GetNext()
	end
end
