Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Once per turn: You can discard 1 WATER monster to the Graveyard, then target 1 monster in either player's Graveyard; return that target to either the top or bottom of the Deck.
--アビス・ウォリアー
--Abyss Warrior
local s,id=GetID()
function s.initial_effect(c)
	--to hand
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetCategory(CATEGORY_TODECK)
	e1:SetType(EFFECT_TYPE_IGNITION)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCountLimit(1)
	e1:SetCost(s.cost)
	e1:SetTarget(s.target)
	e1:SetOperation(s.operation)
	c:RegisterEffect(e1)
end
function s.cfilter(c)
	return c:IsAttribute(ATTRIBUTE_WATER) and c:IsDiscardable() and c:IsAbleToGraveAsCost()
end
function s.cost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.cfilter,tp,LOCATION_HAND,0,1,nil) end
	Duel.DiscardHand(tp,s.cfilter,1,1,REASON_COST|REASON_DISCARD)
end
function s.filter(c)
	return c:IsMonster() and c:IsAbleToDeck()
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_GRAVE) and s.filter(chkc) end
	if chk==0 then return Duel.IsExistingTarget(s.filter,tp,LOCATION_GRAVE,LOCATION_GRAVE,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TODECK)
	local g=Duel.SelectTarget(tp,s.filter,tp,LOCATION_GRAVE,LOCATION_GRAVE,1,1,nil)
	Duel.SetOperationInfo(0,CATEGORY_TODECK,g,1,0,0)
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc and tc:IsRelateToEffect(e) then
		if tc:IsType(TYPE_FUSION+TYPE_SYNCHRO+TYPE_XYZ)
			or Duel.SelectOption(tp,aux.Stringid(id,1),aux.Stringid(id,2))==0 then
			Duel.SendtoDeck(tc,nil,SEQ_DECKTOP,REASON_EFFECT)
		else
			Duel.SendtoDeck(tc,nil,SEQ_DECKBOTTOM,REASON_EFFECT)
		end
	end
end