name: Masked
card_text: You can reveal this card in your hand; add 1 "Mask Change" or "Polymerization" from your Deck to your hand, then discard 1 card. You cannot Special Summon from the Extra Deck the turn you activate this effect, except "HERO" monsters. If you Special Summon a non- FIRE "HERO" Fusion Monster(s): You can Special Summon this card from your GY (if it was there when the monster was Summoned) or hand (even if not), but banish it when it leaves the field. You can only use each effect of "Masked HERO Furnace" once per turn.
external_ids: local CARD_ID_0 = 21143940 --Mask Change
  local CARD_ID_1 = 24094653 --Polymerization
  local SETCARD_ID_0 = 0x8 --HERO
  
lua: local CARD_ID_0 = 21143940 --Mask Change
  local CARD_ID_1 = 24094653 --Polymerization
  local SETCARD_ID_0 = 0x8 --HERO
  local s, id, o = GetID()
  function s.initial_effect(c)
  	aux.AddCodeList(c, CARD_ID_0, CARD_ID_1)
  	local e0 = aux.AddThisCardInGraveAlreadyCheck(c)
  	--search
  	local e1 = Effect.CreateEffect(c)
  	e1:SetDescription(aux.Stringid(id, 0))
  	e1:SetCategory(CATEGORY_SEARCH + CATEGORY_TOHAND + CATEGORY_HANDES)
  	e1:SetType(EFFECT_TYPE_IGNITION)
  	e1:SetRange(LOCATION_HAND)
  	e1:SetCountLimit(1, id)
  	e1:SetCost(s.thcost)
  	e1:SetTarget(s.thtg)
  	e1:SetOperation(s.thop)
  	c:RegisterEffect(e1)
  	--special summon
  	local e2 = Effect.CreateEffect(c)
  	e2:SetDescription(aux.Stringid(id, 1))
  	e2:SetCategory(CATEGORY_SPECIAL_SUMMON)
  	e2:SetType(EFFECT_TYPE_FIELD + EFFECT_TYPE_TRIGGER_O)
  	e2:SetRange(LOCATION_HAND + LOCATION_GRAVE)
  	e2:SetCode(EVENT_SPSUMMON_SUCCESS)
  	e2:SetProperty(EFFECT_FLAG_DELAY)
  	e2:SetLabelObject(e0)
  	e2:SetCountLimit(1, id + o)
  	e2:SetCondition(s.spcon)
  	e2:SetTarget(s.sptg)
  	e2:SetOperation(s.spop)
  	c:RegisterEffect(e2)
  	Duel.AddCustomActivityCounter(id, ACTIVITY_SPSUMMON, s.counterfilter)
  end
  function s.counterfilter(c)
  	return not c:IsSummonLocation(LOCATION_EXTRA) or c:IsSetCard(SETCARD_ID_0)
  end
  function s.thcost(e, tp, eg, ep, ev, re, r, rp, chk)
  	if chk == 0 then
  		return not e:GetHandler():IsPublic() and Duel.GetCustomActivityCount(id, tp, ACTIVITY_SPSUMMON) == 0
  	end
  	local e1 = Effect.CreateEffect(e:GetHandler())
  	e1:SetType(EFFECT_TYPE_FIELD)
  	e1:SetProperty(EFFECT_FLAG_PLAYER_TARGET + EFFECT_FLAG_OATH)
  	e1:SetCode(EFFECT_CANNOT_SPECIAL_SUMMON)
  	e1:SetTargetRange(1, 0)
  	e1:SetTarget(s.splimit)
  	e1:SetReset(RESET_PHASE + PHASE_END)
  	Duel.RegisterEffect(e1, tp)
  end
  function s.splimit(e, c, sump, sumtype, sumpos, targetp, se)
  	return not c:IsSetCard(SETCARD_ID_0) and c:IsLocation(LOCATION_EXTRA)
  end
  function s.thfilter(c)
  	return c:IsCode(CARD_ID_0, CARD_ID_1) and c:IsAbleToHand()
  end
  function s.thtg(e, tp, eg, ep, ev, re, r, rp, chk)
  	if chk == 0 then
  		return Duel.IsExistingMatchingCard(s.thfilter, tp, LOCATION_DECK, 0, 1, nil)
  	end
  	Duel.SetOperationInfo(0, CATEGORY_TOHAND, nil, 1, tp, LOCATION_DECK)
  	Duel.SetOperationInfo(0, CATEGORY_HANDES, nil, 0, tp, 1)
  end
  function s.thop(e, tp, eg, ep, ev, re, r, rp)
  	Duel.Hint(HINT_SELECTMSG, tp, HINTMSG_ATOHAND)
  	local g = Duel.SelectMatchingCard(tp, s.thfilter, tp, LOCATION_DECK, 0, 1, 1, nil)
  	if g:GetCount() > 0 then
  		Duel.SendtoHand(g, nil, REASON_EFFECT)
  		Duel.ConfirmCards(1 - tp, g)
  		if g:IsExists(Card.IsLocation, 1, nil, LOCATION_HAND) then
  			Duel.Hint(HINT_SELECTMSG, tp, HINTMSG_DISCARD)
  			local dg = Duel.SelectMatchingCard(tp, Card.IsDiscardable, tp, LOCATION_HAND, 0, 1, 1, nil, REASON_EFFECT)
  			Duel.BreakEffect()
  			Duel.ShuffleHand(tp)
  			Duel.SendtoGrave(dg, REASON_EFFECT + REASON_DISCARD)
  		end
  	end
  end
  function s.spfilter(c, tp, se)
  	return c:IsSummonPlayer(tp) and not c:IsAttribute(ATTRIBUTE_FIRE) and c:IsSetCard(SETCARD_ID_0) and c:IsType(TYPE_FUSION) and c:IsFaceup() and (se == nil or c:GetReasonEffect() ~= se)
  end
  function s.spcon(e, tp, eg, ep, ev, re, r, rp)
  	local se = e:GetLabelObject():GetLabelObject()
  	return eg:IsExists(s.spfilter, 1, nil, tp, se)
  end
  function s.sptg(e, tp, eg, ep, ev, re, r, rp, chk)
  	if chk == 0 then
  		return Duel.GetLocationCount(tp, LOCATION_MZONE) > 0 and e:GetHandler():IsCanBeSpecialSummoned(e, 0, tp, false, false)
  	end
  	Duel.SetOperationInfo(0, CATEGORY_SPECIAL_SUMMON, e:GetHandler(), 1, 0, 0)
  end
  function s.spop(e, tp, eg, ep, ev, re, r, rp)
  	local c = e:GetHandler()
  	if c:IsRelateToChain() and aux.NecroValleyFilter()(c) and Duel.SpecialSummonStep(c, 0, tp, tp, false, false, POS_FACEUP) then
  		local e1 = Effect.CreateEffect(c)
  		e1:SetType(EFFECT_TYPE_SINGLE)
  		e1:SetCode(EFFECT_LEAVE_FIELD_REDIRECT)
  		e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE)
  		e1:SetReset(RESET_EVENT + RESETS_REDIRECT)
  		e1:SetValue(LOCATION_REMOVED)
  		c:RegisterEffect(e1, true)
  	end
  	Duel.SpecialSummonComplete()
  end
  
  
source_text: Masked
  You can reveal this card in your hand; add 1 "Mask Change" or "Polymerization" from your Deck to your hand, then discard 1 card. You cannot Special Summon from the Extra Deck the turn you activate this effect, except "HERO" monsters. If you Special Summon a non- FIRE "HERO" Fusion Monster(s): You can Special Summon this card from your GY (if it was there when the monster was Summoned) or hand (even if not), but banish it when it leaves the field. You can only use each effect of "Masked HERO Furnace" once per turn.
target_text: -- Masked
  local CARD_ID_0 = 21143940 --Mask Change
  local CARD_ID_1 = 24094653 --Polymerization
  local SETCARD_ID_0 = 0x8 --HERO
  local s, id, o = GetID()
  function s.initial_effect(c)
  	aux.AddCodeList(c, CARD_ID_0, CARD_ID_1)
  	local e0 = aux.AddThisCardInGraveAlreadyCheck(c)
  	--search
  	local e1 = Effect.CreateEffect(c)
  	e1:SetDescription(aux.Stringid(id, 0))
  	e1:SetCategory(CATEGORY_SEARCH + CATEGORY_TOHAND + CATEGORY_HANDES)
  	e1:SetType(EFFECT_TYPE_IGNITION)
  	e1:SetRange(LOCATION_HAND)
  	e1:SetCountLimit(1, id)
  	e1:SetCost(s.thcost)
  	e1:SetTarget(s.thtg)
  	e1:SetOperation(s.thop)
  	c:RegisterEffect(e1)
  	--special summon
  	local e2 = Effect.CreateEffect(c)
  	e2:SetDescription(aux.Stringid(id, 1))
  	e2:SetCategory(CATEGORY_SPECIAL_SUMMON)
  	e2:SetType(EFFECT_TYPE_FIELD + EFFECT_TYPE_TRIGGER_O)
  	e2:SetRange(LOCATION_HAND + LOCATION_GRAVE)
  	e2:SetCode(EVENT_SPSUMMON_SUCCESS)
  	e2:SetProperty(EFFECT_FLAG_DELAY)
  	e2:SetLabelObject(e0)
  	e2:SetCountLimit(1, id + o)
  	e2:SetCondition(s.spcon)
  	e2:SetTarget(s.sptg)
  	e2:SetOperation(s.spop)
  	c:RegisterEffect(e2)
  	Duel.AddCustomActivityCounter(id, ACTIVITY_SPSUMMON, s.counterfilter)
  end
  function s.counterfilter(c)
  	return not c:IsSummonLocation(LOCATION_EXTRA) or c:IsSetCard(SETCARD_ID_0)
  end
  function s.thcost(e, tp, eg, ep, ev, re, r, rp, chk)
  	if chk == 0 then
  		return not e:GetHandler():IsPublic() and Duel.GetCustomActivityCount(id, tp, ACTIVITY_SPSUMMON) == 0
  	end
  	local e1 = Effect.CreateEffect(e:GetHandler())
  	e1:SetType(EFFECT_TYPE_FIELD)
  	e1:SetProperty(EFFECT_FLAG_PLAYER_TARGET + EFFECT_FLAG_OATH)
  	e1:SetCode(EFFECT_CANNOT_SPECIAL_SUMMON)
  	e1:SetTargetRange(1, 0)
  	e1:SetTarget(s.splimit)
  	e1:SetReset(RESET_PHASE + PHASE_END)
  	Duel.RegisterEffect(e1, tp)
  end
  function s.splimit(e, c, sump, sumtype, sumpos, targetp, se)
  	return not c:IsSetCard(SETCARD_ID_0) and c:IsLocation(LOCATION_EXTRA)
  end
  function s.thfilter(c)
  	return c:IsCode(CARD_ID_0, CARD_ID_1) and c:IsAbleToHand()
  end
  function s.thtg(e, tp, eg, ep, ev, re, r, rp, chk)
  	if chk == 0 then
  		return Duel.IsExistingMatchingCard(s.thfilter, tp, LOCATION_DECK, 0, 1, nil)
  	end
  	Duel.SetOperationInfo(0, CATEGORY_TOHAND, nil, 1, tp, LOCATION_DECK)
  	Duel.SetOperationInfo(0, CATEGORY_HANDES, nil, 0, tp, 1)
  end
  function s.thop(e, tp, eg, ep, ev, re, r, rp)
  	Duel.Hint(HINT_SELECTMSG, tp, HINTMSG_ATOHAND)
  	local g = Duel.SelectMatchingCard(tp, s.thfilter, tp, LOCATION_DECK, 0, 1, 1, nil)
  	if g:GetCount() > 0 then
  		Duel.SendtoHand(g, nil, REASON_EFFECT)
  		Duel.ConfirmCards(1 - tp, g)
  		if g:IsExists(Card.IsLocation, 1, nil, LOCATION_HAND) then
  			Duel.Hint(HINT_SELECTMSG, tp, HINTMSG_DISCARD)
  			local dg = Duel.SelectMatchingCard(tp, Card.IsDiscardable, tp, LOCATION_HAND, 0, 1, 1, nil, REASON_EFFECT)
  			Duel.BreakEffect()
  			Duel.ShuffleHand(tp)
  			Duel.SendtoGrave(dg, REASON_EFFECT + REASON_DISCARD)
  		end
  	end
  end
  function s.spfilter(c, tp, se)
  	return c:IsSummonPlayer(tp) and not c:IsAttribute(ATTRIBUTE_FIRE) and c:IsSetCard(SETCARD_ID_0) and c:IsType(TYPE_FUSION) and c:IsFaceup() and (se == nil or c:GetReasonEffect() ~= se)
  end
  function s.spcon(e, tp, eg, ep, ev, re, r, rp)
  	local se = e:GetLabelObject():GetLabelObject()
  	return eg:IsExists(s.spfilter, 1, nil, tp, se)
  end
  function s.sptg(e, tp, eg, ep, ev, re, r, rp, chk)
  	if chk == 0 then
  		return Duel.GetLocationCount(tp, LOCATION_MZONE) > 0 and e:GetHandler():IsCanBeSpecialSummoned(e, 0, tp, false, false)
  	end
  	Duel.SetOperationInfo(0, CATEGORY_SPECIAL_SUMMON, e:GetHandler(), 1, 0, 0)
  end
  function s.spop(e, tp, eg, ep, ev, re, r, rp)
  	local c = e:GetHandler()
  	if c:IsRelateToChain() and aux.NecroValleyFilter()(c) and Duel.SpecialSummonStep(c, 0, tp, tp, false, false, POS_FACEUP) then
  		local e1 = Effect.CreateEffect(c)
  		e1:SetType(EFFECT_TYPE_SINGLE)
  		e1:SetCode(EFFECT_LEAVE_FIELD_REDIRECT)
  		e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE)
  		e1:SetReset(RESET_EVENT + RESETS_REDIRECT)
  		e1:SetValue(LOCATION_REMOVED)
  		c:RegisterEffect(e1, true)
  	end
  	Duel.SpecialSummonComplete()
  end
  
  