--潜海奇襲
function c19089195.initial_effect(c)
	aux.AddCodeList(c,22702055)
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetOperation(c19089195.activate)
	c:RegisterEffect(e1)
	--remove
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(19089195,1))
	e2:SetType(EFFECT_TYPE_QUICK_O)
	e2:SetRange(LOCATION_SZONE)
	e2:SetCode(EVENT_FREE_CHAIN)
	e2:SetCountLimit(1)
	e2:SetCondition(c19089195.econ)
	e2:SetCost(c19089195.remcost)
	e2:SetOperation(c19089195.remop)
	c:RegisterEffect(e2)
	--destroy
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(19089195,2))
	e3:SetCategory(CATEGORY_DESTROY)
	e3:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_F)
	e3:SetCode(EVENT_BATTLE_START)
	e3:SetRange(LOCATION_SZONE)
	e3:SetCondition(c19089195.descon)
	e3:SetTarget(c19089195.destg)
	e3:SetOperation(c19089195.desop)
	c:RegisterEffect(e3)
end
function c19089195.filter(c,tp)
	return c:IsCode(22702055) and (c:IsType(TYPE_FIELD) or Duel.GetLocationCount(tp,LOCATION_SZONE)>0)
		and c:GetActivateEffect() and c:GetActivateEffect():IsActivatable(tp,true,true)
end
function c19089195.activate(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetMatchingGroup(aux.NecroValleyFilter(c19089195.filter),tp,LOCATION_HAND+LOCATION_GRAVE,0,nil,tp)
	if g:GetCount()>0 and Duel.SelectYesNo(tp,aux.Stringid(19089195,0)) then
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TOFIELD)
		local tc=Duel.SelectMatchingCard(tp,aux.NecroValleyFilter(c19089195.filter),tp,LOCATION_HAND+LOCATION_GRAVE,0,1,1,nil,tp):GetFirst()
		if tc then
			local field=tc:IsType(TYPE_FIELD)
			if field then
				local fc=Duel.GetFieldCard(tp,LOCATION_FZONE,0)
				if fc then
					Duel.SendtoGrave(fc,REASON_RULE)
					Duel.BreakEffect()
				end
				Duel.MoveToField(tc,tp,tp,LOCATION_FZONE,POS_FACEUP,true)
			else
				Duel.MoveToField(tc,tp,tp,LOCATION_SZONE,POS_FACEUP,true)
			end
			local te=tc:GetActivateEffect()
			te:UseCountLimit(tp,1,true)
			local tep=tc:GetControler()
			local cost=te:GetCost()
			if cost then cost(te,tep,eg,ep,ev,re,r,rp,1) end
			if field then
				Duel.RaiseEvent(tc,4179255,te,0,tp,tp,Duel.GetCurrentChain())
			end
		end
	end
end
function c19089195.econ(e,tp,eg,ep,ev,re,r,rp)
	return Duel.IsEnvironment(22702055)
end
function c19089195.costfilter(c)
	return c:IsFaceup() and c:IsAttribute(ATTRIBUTE_WATER) and c:IsAbleToRemoveAsCost()
end
function c19089195.remcost(e,tp,eg,ep,ev,re,r,rp,chk)
	local c=e:GetHandler()
	if chk==0 then return Duel.IsExistingMatchingCard(c19089195.costfilter,tp,LOCATION_MZONE,0,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_REMOVE)
	local g=Duel.SelectMatchingCard(tp,c19089195.costfilter,tp,LOCATION_MZONE,0,1,1,nil)
	if Duel.Remove(g,POS_FACEUP,REASON_COST+REASON_TEMPORARY)~=0 then
		local rc=g:GetFirst()
		if rc:IsType(TYPE_TOKEN) then return end
		local e1=Effect.CreateEffect(c)
		e1:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_CONTINUOUS)
		e1:SetCode(EVENT_PHASE+PHASE_END)
		e1:SetReset(RESET_PHASE+PHASE_END)
		e1:SetLabelObject(rc)
		e1:SetCountLimit(1)
		e1:SetOperation(c19089195.retop)
		Duel.RegisterEffect(e1,tp)
	end
end
function c19089195.retop(e,tp,eg,ep,ev,re,r,rp)
	Duel.ReturnToField(e:GetLabelObject())
end
function c19089195.remop(e,tp,eg,ep,ev,re,r,rp)
	local e1=Effect.CreateEffect(e:GetHandler())
	e1:SetType(EFFECT_TYPE_FIELD)
	e1:SetCode(EFFECT_INDESTRUCTABLE_EFFECT)
	e1:SetTargetRange(LOCATION_ONFIELD,0)
	e1:SetTarget(aux.TargetBoolFunction(Card.IsType,TYPE_SPELL+TYPE_TRAP))
	e1:SetValue(aux.indoval)
	e1:SetReset(RESET_PHASE+PHASE_END)
	Duel.RegisterEffect(e1,tp)
end
function c19089195.descon(e,tp,eg,ep,ev,re,r,rp)
	if not c19089195.econ(e,tp,eg,ep,ev,re,r,rp) then return false end
	local tc=Duel.GetAttacker()
	local bc=Duel.GetAttackTarget()
	if not bc then return false end
	if tc:IsControler(1-tp) then tc,bc=bc,tc end
	if tc:IsFaceup() and tc:GetOriginalLevel()>=5 and tc:IsAttribute(ATTRIBUTE_WATER) then
		e:SetLabelObject(bc)
		return true
	else return false end
end
function c19089195.destg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	local bc=e:GetLabelObject()
	Duel.SetOperationInfo(0,CATEGORY_DESTROY,bc,1,0,0)
end
function c19089195.desop(e,tp,eg,ep,ev,re,r,rp)
	local bc=e:GetLabelObject()
	if bc:IsRelateToBattle() then
		Duel.Destroy(bc,REASON_EFFECT)
	end
end
