--机动战舰 海兽鲸
function c40009123.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	c:RegisterEffect(e1)
	--negate
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(40009123,0))
	e2:SetCategory(CATEGORY_NEGATE+CATEGORY_REMOVE)
	e2:SetProperty(EFFECT_FLAG_DAMAGE_STEP+EFFECT_FLAG_DAMAGE_CAL)
	e2:SetType(EFFECT_TYPE_QUICK_O)
	e2:SetRange(LOCATION_SZONE)
	e2:SetCountLimit(1,40009123)
	e2:SetCode(EVENT_CHAINING)
	e2:SetCondition(c40009123.negcon)
	e2:SetCost(c40009123.cost1)
	e2:SetTarget(c40009123.negtg)
	e2:SetOperation(c40009123.negop)
	c:RegisterEffect(e2) 
	--search
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(40009123,1))
	e3:SetCategory(CATEGORY_ATKCHANGE)
	e3:SetRange(LOCATION_SZONE)
	e3:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_O)
	e3:SetCode(EVENT_ATTACK_ANNOUNCE)
	e3:SetCountLimit(1)
	e3:SetCondition(c40009123.condition)
	e3:SetTarget(c40009123.destg)
	e3:SetOperation(c40009123.desop)
	c:RegisterEffect(e3)   
end
function c40009123.negcon(e,tp,eg,ep,ev,re,r,rp)
	return ep~=tp and (re:GetActivateLocation()==LOCATION_GRAVE or re:GetActivateLocation()==LOCATION_HAND) and Duel.IsChainNegatable(ev)
end
function c40009123.costfilter1(c)
	return c:IsSetCard(0x6f1d) and c:IsType(TYPE_MONSTER) and not c:IsPublic()
end
function c40009123.cost1(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(c40009123.costfilter1,tp,LOCATION_HAND,0,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_CONFIRM)
	local g=Duel.SelectMatchingCard(tp,c40009123.costfilter1,tp,LOCATION_HAND,0,1,1,nil)
	Duel.ConfirmCards(1-tp,g)
	Duel.ShuffleHand(tp)
end
function c40009123.negtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return aux.nbcon(tp,re) end
	Duel.SetOperationInfo(0,CATEGORY_NEGATE,eg,1,0,0)
	if re:GetHandler():IsRelateToEffect(re) then
		Duel.SetOperationInfo(0,CATEGORY_REMOVE,eg,1,0,0)
	end
end
function c40009123.negop(e,tp,eg,ep,ev,re,r,rp)
	if Duel.NegateActivation(ev) and re:GetHandler():IsRelateToEffect(re) then
		Duel.Remove(eg,POS_FACEUP,REASON_EFFECT)
	end
	local e1=Effect.CreateEffect(e:GetHandler())
	e1:SetType(EFFECT_TYPE_FIELD)
	e1:SetCode(EFFECT_CHANGE_BATTLE_DAMAGE)
	e1:SetProperty(EFFECT_FLAG_PLAYER_TARGET)
	e1:SetTargetRange(0,1)
	e1:SetValue(HALF_DAMAGE)
	e1:SetReset(RESET_PHASE+PHASE_END)
	Duel.RegisterEffect(e1,tp)
end
function c40009123.condition(e,tp,eg,ep,ev,re,r,rp)
	return Duel.GetBattledCount(tp)==0 
end
function c40009123.atkfilter(c)
	return aux.nzatk(c) or aux.nzdef(c)
end
function c40009123.destg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(c40009123.atkfilter,tp,0,LOCATION_MZONE,1,nil) end
	local g=Duel.GetMatchingGroup(c40009123.atkfilter,tp,0,LOCATION_MZONE,nil)
	Duel.SetOperationInfo(0,CATEGORY_ATKCHANGE,g,1,0,0)
end
function c40009123.desop(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_FACEUP)
		local g=Duel.SelectMatchingCard(tp,c40009123.atkfilter,tp,0,LOCATION_MZONE,1,1,nil)
	if g:GetCount()>0 then
		Duel.HintSelection(g)
		local tc=g:GetFirst()
		local e1=Effect.CreateEffect(e:GetHandler())
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_SET_BASE_ATTACK)
		e1:SetReset(RESET_EVENT+RESETS_STANDARD)
		e1:SetValue(math.ceil(tc:GetBaseAttack()/2))
		tc:RegisterEffect(e1)
		local e2=e1:Clone()
		e2:SetCode(EFFECT_SET_BASE_DEFENSE)
		e2:SetReset(RESET_EVENT+RESETS_STANDARD)
		e2:SetValue(math.ceil(tc:GetBaseDefense()/2))
		tc:RegisterEffect(e2)
	end
end