name: Abyss
card_text: 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.
lua: local s, id, o = 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:IsType(TYPE_MONSTER) 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:IsExtraDeckMonster() 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
  
  
source_text: Abyss
  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.
target_text: -- Abyss
  local s, id, o = 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:IsType(TYPE_MONSTER) 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:IsExtraDeckMonster() 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
  
  