--Leviathan Keeper
local ref,id=GetID()
function ref.initial_effect(c)
	c:EnableReviveLimit()
	local magick=Effect.CreateEffect(c)
	magick:SetDescription(aux.Stringid(id,0))
	magick:SetCategory(CATEGORY_SPECIAL_SUMMON)
	magick:SetType(EFFECT_TYPE_TRIGGER_O)
	magick:SetProperty(EFFECT_FLAG_DELAY+EFFECT_FLAG_CARD_TARGET+EFFECT_FLAG_SET_AVAILABLE)
	magick:SetTarget(ref.sstg)
	magick:SetOperation(ref.ssop)
	aux.AddMagickProcCustom(c,ref.magcon,aux.MagickMatCost,magick,aux.TRUE,3)
	aux.AddXyzProcedure(c,nil,5,2)
	--Attach
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,1))
	e1:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetCode(EVENT_SPSUMMON_SUCCESS)
	e1:SetCountLimit(1,id)
	e1:SetTarget(ref.mattg)
	e1:SetOperation(ref.matop)
	c:RegisterEffect(e1)
	--Salvage
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,2))
	e2:SetCategory(CATEGORY_TOHAND)
	e2:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e2:SetType(EFFECT_TYPE_QUICK_O)
	e2:SetRange(LOCATION_MZONE)
	e2:SetCountLimit(1,id+1000)
	e2:SetCode(EVENT_FREE_CHAIN)
	e2:SetHintTiming(0,TIMING_END_PHASE)
	e2:SetCost(ref.thcost)
	e2:SetTarget(ref.thtg)
	e2:SetOperation(ref.thop)
	c:RegisterEffect(e2)
end
function ref.magcon(e,tp,eg,ep,ev,re,r,rp)
	return re:GetActivateLocation()==LOCATION_HAND and not re:IsHasType(EFFECT_TYPE_ACTIVATE)
end

function ref.ssfilter(c,e,tp)
	return c:IsCanBeSpecialSummoned(e,0,tp,false,false)
end
function ref.sstg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_GRAVE) and chkc:IsControler(tp) and ref.ssfilter(chkc,e,tp) end
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and Duel.IsExistingTarget(ref.ssfilter,tp,LOCATION_GRAVE,0,1,nil,e,tp) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local g=Duel.SelectTarget(tp,ref.ssfilter,tp,LOCATION_GRAVE,0,1,1,nil,e,tp)
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,g,1,0,0)
	if g:GetFirst():IsRace(RACE_SEASERPENT) then
		e:SetCategory(CATEGORY_SPECIAL_SUMMON+CATEGORY_DRAW)
	else
		e:SetCategory(CATEGORY_SPECIAL_SUMMON)
	end
end
function ref.ssop(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc:IsRelateToEffect(e) and Duel.SpecialSummon(tc,0,tp,tp,false,false,POS_FACEUP)~=0 and tc:IsRace(RACE_SEASERPENT) then
		Duel.Draw(tp,1,REASON_EFFECT)
	end
end

--Attach
function ref.xfilter(c)
	return c:IsFaceup() and c:IsType(TYPE_XYZ)
end
function ref.mattg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_GRAVE) and ref.filter(chkc) end
	if chk==0 then return e:GetHandler():IsType(TYPE_XYZ)
		and Duel.IsExistingTarget(Card.IsCanOverlay,tp,LOCATION_GRAVE,LOCATION_GRAVE,1,nil)
		and Duel.IsExistingMatchingCard(ref.xfilter,tp,LOCATION_MZONE,0,1,nil)
	end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_XMATERIAL)
	Duel.SelectTarget(tp,Card.IsCanOverlay,tp,LOCATION_GRAVE,LOCATION_GRAVE,1,1,nil)
end
function ref.matop(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_FACEUP)
	local c=Duel.SelectMatchingCard(tp,ref.xfilter,tp,LOCATION_MZONE,0,1,1,nil):GetFirst()
	local tc=Duel.GetFirstTarget()
	if c:IsRelateToEffect(e) and tc:IsRelateToEffect(e) and not tc:IsImmuneToEffect(e) then
		local og=tc:GetOverlayGroup()
		if og:GetCount()>0 then
			Duel.SendtoGrave(og,REASON_RULE)
		end
		Duel.Overlay(c,Group.FromCards(tc))
		if tc:IsLocation(LOCATION_OVERLAY) and not e:GetHandler():GetOverlayGroup():IsContains(tc) then
			Duel.Draw(tp,1,REASON_EFFECT)
		end
	end
end

--Salvage
function ref.thcost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return e:GetHandler():CheckRemoveOverlayCard(tp,1,REASON_COST) end
	e:GetHandler():RemoveOverlayCard(tp,1,1,REASON_COST)
end
function ref.thfilter(c)
	return c:IsAttribute(ATTRIBUTE_WATER) and c:IsAbleToHand()
end
function ref.thtg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsControler(tp) and ref.thfilter(chkc,e,tp) end
	if chk==0 then return Duel.IsExistingTarget(ref.thfilter,tp,LOCATION_GRAVE,0,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_RTOHAND)
	local g=Duel.SelectTarget(tp,ref.thfilter,tp,LOCATION_GRAVE,0,1,1,nil)
	Duel.SetOperationInfo(0,CATEGORY_TOHAND,g,1,0,0)
end
function ref.thop(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc:IsRelateToEffect(e) then
		Duel.SendtoHand(tc,nil,REASON_EFFECT)
	end
end