--アビスティング－トリアイナ
--Abyss-sting Triaina
--scripted by Naim
local s,id=GetID()
function s.initial_effect(c)
	--Special Summon 1 "Atlantean" or "Mermail" monster from your hand or GY, and if you do, equip it with this card
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_SPECIAL_SUMMON+CATEGORY_EQUIP)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetCountLimit(1,id,EFFECT_COUNT_CODE_OATH)
	e1:SetTarget(s.sptg)
	e1:SetOperation(s.spop)
	c:RegisterEffect(e1)
	--If the equipped monster would be destroyed by battle or card effect, you can send this card to the GY instead
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_EQUIP+EFFECT_TYPE_CONTINUOUS)
	e2:SetProperty(EFFECT_FLAG_IGNORE_IMMUNE)
	e2:SetCode(EFFECT_DESTROY_REPLACE)
	e2:SetTarget(s.replacetg)
	c:RegisterEffect(e2)
	--Shuffle up to 3 of your 3 Fish, Sea Serpent, and/or Aqua monsters from your GY or banishment into your Deck
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id,1))
	e3:SetCategory(CATEGORY_TODECK)
	e3:SetType(EFFECT_TYPE_IGNITION)
	e3:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e3:SetRange(LOCATION_GRAVE)
	e3:SetCountLimit(1,{id,1})
	e3:SetCost(Cost.SelfBanish)
	e3:SetTarget(s.tdtg)
	e3:SetOperation(s.tdop)
	c:RegisterEffect(e3)
end
s.listed_series={SET_ATLANTEAN,SET_MERMAIL}
function s.spfilter(c,e,tp)
	return c:IsSetCard(s.listed_series) and c:IsCanBeSpecialSummoned(e,0,tp,false,false)
end
function s.sptg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and Duel.IsExistingMatchingCard(s.spfilter,tp,LOCATION_HAND|LOCATION_GRAVE,0,1,nil,e,tp) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_HAND|LOCATION_GRAVE)
	Duel.SetOperationInfo(0,CATEGORY_EQUIP,e:GetHandler(),1,tp,0)
end
function s.spop(e,tp,eg,ep,ev,re,r,rp)
	if Duel.GetLocationCount(tp,LOCATION_MZONE)==0 then return end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local tc=Duel.SelectMatchingCard(tp,aux.NecroValleyFilter(s.spfilter),tp,LOCATION_HAND|LOCATION_GRAVE,0,1,1,nil,e,tp):GetFirst()
	if not tc then return end
	local c=e:GetHandler()
	if c:IsRelateToEffect(e) and Duel.SpecialSummon(tc,0,tp,tp,false,false,POS_FACEUP)>0 and Duel.Equip(tp,c,tc) then
		--Equip limit
		local e1=Effect.CreateEffect(c)
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE)
		e1:SetCode(EFFECT_EQUIP_LIMIT)
		e1:SetValue(function(e,c) return c==tc end)
		e1:SetReset(RESET_EVENT|RESETS_STANDARD)
		c:RegisterEffect(e1)
	end
end
function s.replacetg(e,tp,eg,ep,ev,re,r,rp,chk)
	local c=e:GetHandler()
	local ec=c:GetEquipTarget()
	if chk==0 then return ec:IsReason(REASON_BATTLE|REASON_EFFECT) and not ec:IsReason(REASON_REPLACE)
		and c:IsAbleToGrave() and not c:IsStatus(STATUS_DESTROY_CONFIRMED) end
	if Duel.SelectEffectYesNo(tp,c,96) then
		Duel.SendtoGrave(c,REASON_EFFECT)
		return true
	else return false end
end
function s.tdfilter(c)
	return c:IsRace(RACE_FISH|RACE_SEASERPENT|RACE_AQUA) and c:IsFaceup() and c:IsAbleToDeck()
end
function s.tdtg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsControler(tp) and chkc:IsLocation(LOCATION_GRAVE|LOCATION_REMOVED) and s.tdfilter(chkc) end
	if chk==0 then return Duel.IsExistingTarget(s.tdfilter,tp,LOCATION_GRAVE|LOCATION_REMOVED,0,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TODECK)
	local g=Duel.SelectTarget(tp,s.tdfilter,tp,LOCATION_GRAVE|LOCATION_REMOVED,0,1,3,nil)
	Duel.SetOperationInfo(0,CATEGORY_TODECK,g,#g,tp,0)
end
function s.tdop(e,tp,eg,ep,ev,re,r,rp)
	local tg=Duel.GetTargetCards(e)
	if #tg>0 then
		Duel.SendtoDeck(tg,nil,SEQ_DECKSHUFFLE,REASON_EFFECT)
	end
end