name: Doomstar
card_text: When exactly 1 monster you control (and no other monsters) leaves the field by an opponent's card effect (except during the Damage Step): You can banish this card from your hand or GY; if that monster is in the GY or banished face-up, Special Summon it, otherwise, Special Summon this banished card. If this card is Special Summoned: You can make this card gain 1500 ATK until the end of the next turn. You can only use each effect of "Doomstar Ulka" once per turn.
lua: local s, id, o = GetID()
  function s.initial_effect(c)
  	--spsummon
  	local e1 = Effect.CreateEffect(c)
  	e1:SetDescription(aux.Stringid(id, 0))
  	e1:SetCategory(CATEGORY_SPECIAL_SUMMON)
  	e1:SetType(EFFECT_TYPE_FIELD + EFFECT_TYPE_TRIGGER_O)
  	e1:SetCode(EVENT_LEAVE_FIELD)
  	e1:SetRange(LOCATION_GRAVE + LOCATION_HAND)
  	e1:SetCountLimit(1, id)
  	e1:SetCondition(s.spcon)
  	e1:SetCost(aux.bfgcost)
  	e1:SetTarget(s.sptg)
  	e1:SetOperation(s.spop)
  	c:RegisterEffect(e1)
  	--atkup
  	local e2 = Effect.CreateEffect(c)
  	e2:SetDescription(aux.Stringid(id, 1))
  	e2:SetCategory(CATEGORY_ATKCHANGE)
  	e2:SetType(EFFECT_TYPE_SINGLE + EFFECT_TYPE_TRIGGER_O)
  	e2:SetCode(EVENT_SPSUMMON_SUCCESS)
  	e2:SetCountLimit(1, id + o)
  	e2:SetProperty(EFFECT_FLAG_DELAY)
  	e2:SetOperation(s.atkop)
  	c:RegisterEffect(e2)
  end
  function s.spcon(e, tp, eg, ep, ev, re, r, rp)
  	local tc = eg:GetFirst()
  	return #eg == 1 and tc:IsPreviousControler(tp) and tc:IsPreviousLocation(LOCATION_MZONE) and tc:GetReasonPlayer() == 1 - tp and tc:IsReason(REASON_EFFECT)
  end
  function s.sptg(e, tp, eg, ep, ev, re, r, rp, chk)
  	local tc = eg:GetFirst()
  	if chk == 0 then
  		return Duel.GetLocationCount(tp, LOCATION_MZONE) > 0 and tc:IsCanBeSpecialSummoned(e, 0, tp, false, false)
  	end
  	local c = e:GetHandler()
  	c:CreateEffectRelation(e)
  	Duel.SetTargetCard(tc)
  	local g = Group.FromCards(c, tc)
  	Duel.SetOperationInfo(0, CATEGORY_SPECIAL_SUMMON, g, 1, 0, 0)
  end
  function s.spop(e, tp, eg, ep, ev, re, r, rp)
  	local c = e:GetHandler()
  	local tc = Duel.GetFirstTarget()
  	if tc:IsRelateToEffect(e) and tc:IsLocation(LOCATION_GRAVE + LOCATION_REMOVED) and tc:IsFaceupEx() then
  		if aux.NecroValleyNegateCheck(tc) then
  			return
  		end
  		Duel.SpecialSummon(tc, 0, tp, tp, false, false, POS_FACEUP)
  	elseif c:IsRelateToEffect(e) and c:IsLocation(LOCATION_REMOVED) then
  		Duel.SpecialSummon(c, 0, tp, tp, false, false, POS_FACEUP)
  	end
  end
  function s.atkop(e, tp, eg, ep, ev, re, r, rp)
  	local c = e:GetHandler()
  	if not c:IsRelateToChain() or c:IsFacedown() then
  		return
  	end
  	local e1 = Effect.CreateEffect(c)
  	e1:SetType(EFFECT_TYPE_SINGLE)
  	e1:SetCode(EFFECT_UPDATE_ATTACK)
  	e1:SetReset(RESET_EVENT + RESETS_STANDARD + RESET_DISABLE + RESET_PHASE + PHASE_END, 2)
  	e1:SetValue(1500)
  	c:RegisterEffect(e1)
  end
  
  
source_text: Doomstar
  When exactly 1 monster you control (and no other monsters) leaves the field by an opponent's card effect (except during the Damage Step): You can banish this card from your hand or GY; if that monster is in the GY or banished face-up, Special Summon it, otherwise, Special Summon this banished card. If this card is Special Summoned: You can make this card gain 1500 ATK until the end of the next turn. You can only use each effect of "Doomstar Ulka" once per turn.
target_text: -- Doomstar
  local s, id, o = GetID()
  function s.initial_effect(c)
  	--spsummon
  	local e1 = Effect.CreateEffect(c)
  	e1:SetDescription(aux.Stringid(id, 0))
  	e1:SetCategory(CATEGORY_SPECIAL_SUMMON)
  	e1:SetType(EFFECT_TYPE_FIELD + EFFECT_TYPE_TRIGGER_O)
  	e1:SetCode(EVENT_LEAVE_FIELD)
  	e1:SetRange(LOCATION_GRAVE + LOCATION_HAND)
  	e1:SetCountLimit(1, id)
  	e1:SetCondition(s.spcon)
  	e1:SetCost(aux.bfgcost)
  	e1:SetTarget(s.sptg)
  	e1:SetOperation(s.spop)
  	c:RegisterEffect(e1)
  	--atkup
  	local e2 = Effect.CreateEffect(c)
  	e2:SetDescription(aux.Stringid(id, 1))
  	e2:SetCategory(CATEGORY_ATKCHANGE)
  	e2:SetType(EFFECT_TYPE_SINGLE + EFFECT_TYPE_TRIGGER_O)
  	e2:SetCode(EVENT_SPSUMMON_SUCCESS)
  	e2:SetCountLimit(1, id + o)
  	e2:SetProperty(EFFECT_FLAG_DELAY)
  	e2:SetOperation(s.atkop)
  	c:RegisterEffect(e2)
  end
  function s.spcon(e, tp, eg, ep, ev, re, r, rp)
  	local tc = eg:GetFirst()
  	return #eg == 1 and tc:IsPreviousControler(tp) and tc:IsPreviousLocation(LOCATION_MZONE) and tc:GetReasonPlayer() == 1 - tp and tc:IsReason(REASON_EFFECT)
  end
  function s.sptg(e, tp, eg, ep, ev, re, r, rp, chk)
  	local tc = eg:GetFirst()
  	if chk == 0 then
  		return Duel.GetLocationCount(tp, LOCATION_MZONE) > 0 and tc:IsCanBeSpecialSummoned(e, 0, tp, false, false)
  	end
  	local c = e:GetHandler()
  	c:CreateEffectRelation(e)
  	Duel.SetTargetCard(tc)
  	local g = Group.FromCards(c, tc)
  	Duel.SetOperationInfo(0, CATEGORY_SPECIAL_SUMMON, g, 1, 0, 0)
  end
  function s.spop(e, tp, eg, ep, ev, re, r, rp)
  	local c = e:GetHandler()
  	local tc = Duel.GetFirstTarget()
  	if tc:IsRelateToEffect(e) and tc:IsLocation(LOCATION_GRAVE + LOCATION_REMOVED) and tc:IsFaceupEx() then
  		if aux.NecroValleyNegateCheck(tc) then
  			return
  		end
  		Duel.SpecialSummon(tc, 0, tp, tp, false, false, POS_FACEUP)
  	elseif c:IsRelateToEffect(e) and c:IsLocation(LOCATION_REMOVED) then
  		Duel.SpecialSummon(c, 0, tp, tp, false, false, POS_FACEUP)
  	end
  end
  function s.atkop(e, tp, eg, ep, ev, re, r, rp)
  	local c = e:GetHandler()
  	if not c:IsRelateToChain() or c:IsFacedown() then
  		return
  	end
  	local e1 = Effect.CreateEffect(c)
  	e1:SetType(EFFECT_TYPE_SINGLE)
  	e1:SetCode(EFFECT_UPDATE_ATTACK)
  	e1:SetReset(RESET_EVENT + RESETS_STANDARD + RESET_DISABLE + RESET_PHASE + PHASE_END, 2)
  	e1:SetValue(1500)
  	c:RegisterEffect(e1)
  end
  
  