name: Butterfly
card_text: The equipped monster gains 300 ATK. When this card is destroyed and sent to the Graveyard while equipped: You can return this card to the hand.
lua: local s, id, o = GetID()
  function s.initial_effect(c)
  	--Activate
  	local e1 = Effect.CreateEffect(c)
  	e1:SetCategory(CATEGORY_EQUIP)
  	e1:SetType(EFFECT_TYPE_ACTIVATE)
  	e1:SetCode(EVENT_FREE_CHAIN)
  	e1:SetProperty(EFFECT_FLAG_CARD_TARGET + EFFECT_FLAG_CONTINUOUS_TARGET)
  	e1:SetTarget(s.target)
  	e1:SetOperation(s.operation)
  	c:RegisterEffect(e1)
  	--Atk
  	local e2 = Effect.CreateEffect(c)
  	e2:SetType(EFFECT_TYPE_EQUIP)
  	e2:SetCode(EFFECT_UPDATE_ATTACK)
  	e2:SetValue(300)
  	c:RegisterEffect(e2)
  	--Equip limit
  	local e3 = Effect.CreateEffect(c)
  	e3:SetType(EFFECT_TYPE_SINGLE)
  	e3:SetCode(EFFECT_EQUIP_LIMIT)
  	e3:SetProperty(EFFECT_FLAG_CANNOT_DISABLE)
  	e3:SetValue(1)
  	c:RegisterEffect(e3)
  	--tohand
  	local e4 = Effect.CreateEffect(c)
  	e4:SetDescription(aux.Stringid(id, 0))
  	e4:SetType(EFFECT_TYPE_SINGLE + EFFECT_TYPE_TRIGGER_O)
  	e4:SetCategory(CATEGORY_TOHAND)
  	e4:SetCode(EVENT_TO_GRAVE)
  	e4:SetCondition(s.retcon)
  	e4:SetTarget(s.rettg)
  	e4:SetOperation(s.retop)
  	c:RegisterEffect(e4)
  end
  function s.target(e, tp, eg, ep, ev, re, r, rp, chk, chkc)
  	if chkc then
  		return chkc:IsLocation(LOCATION_MZONE) and chkc:IsFaceup()
  	end
  	if chk == 0 then
  		return Duel.IsExistingTarget(Card.IsFaceup, tp, LOCATION_MZONE, LOCATION_MZONE, 1, nil)
  	end
  	Duel.Hint(HINT_SELECTMSG, tp, HINTMSG_EQUIP)
  	Duel.SelectTarget(tp, Card.IsFaceup, tp, LOCATION_MZONE, LOCATION_MZONE, 1, 1, nil)
  	Duel.SetOperationInfo(0, CATEGORY_EQUIP, e:GetHandler(), 1, 0, 0)
  end
  function s.operation(e, tp, eg, ep, ev, re, r, rp)
  	local c = e:GetHandler()
  	local tc = Duel.GetFirstTarget()
  	if c:IsRelateToEffect(e) and tc:IsRelateToEffect(e) and tc:IsFaceup() then
  		Duel.Equip(tp, c, tc)
  	end
  end
  function s.retcon(e, tp, eg, ep, ev, re, r, rp)
  	local c = e:GetHandler()
  	return c:IsPreviousLocation(LOCATION_SZONE) and c:IsReason(REASON_DESTROY) and c:GetPreviousEquipTarget() and not c:IsReason(REASON_LOST_TARGET)
  end
  function s.rettg(e, tp, eg, ep, ev, re, r, rp, chk)
  	if chk == 0 then
  		return e:GetHandler():IsAbleToHand()
  	end
  	e:GetHandler():CreateEffectRelation(e)
  	Duel.SetOperationInfo(0, CATEGORY_TOHAND, e:GetHandler(), 1, 0, 0)
  end
  function s.retop(e, tp, eg, ep, ev, re, r, rp)
  	local c = e:GetHandler()
  	if c:IsRelateToEffect(e) then
  		Duel.SendtoHand(c, nil, REASON_EFFECT)
  		Duel.ConfirmCards(1 - tp, c)
  	end
  end
  
  
source_text: Butterfly
  The equipped monster gains 300 ATK. When this card is destroyed and sent to the Graveyard while equipped: You can return this card to the hand.
target_text: -- Butterfly
  local s, id, o = GetID()
  function s.initial_effect(c)
  	--Activate
  	local e1 = Effect.CreateEffect(c)
  	e1:SetCategory(CATEGORY_EQUIP)
  	e1:SetType(EFFECT_TYPE_ACTIVATE)
  	e1:SetCode(EVENT_FREE_CHAIN)
  	e1:SetProperty(EFFECT_FLAG_CARD_TARGET + EFFECT_FLAG_CONTINUOUS_TARGET)
  	e1:SetTarget(s.target)
  	e1:SetOperation(s.operation)
  	c:RegisterEffect(e1)
  	--Atk
  	local e2 = Effect.CreateEffect(c)
  	e2:SetType(EFFECT_TYPE_EQUIP)
  	e2:SetCode(EFFECT_UPDATE_ATTACK)
  	e2:SetValue(300)
  	c:RegisterEffect(e2)
  	--Equip limit
  	local e3 = Effect.CreateEffect(c)
  	e3:SetType(EFFECT_TYPE_SINGLE)
  	e3:SetCode(EFFECT_EQUIP_LIMIT)
  	e3:SetProperty(EFFECT_FLAG_CANNOT_DISABLE)
  	e3:SetValue(1)
  	c:RegisterEffect(e3)
  	--tohand
  	local e4 = Effect.CreateEffect(c)
  	e4:SetDescription(aux.Stringid(id, 0))
  	e4:SetType(EFFECT_TYPE_SINGLE + EFFECT_TYPE_TRIGGER_O)
  	e4:SetCategory(CATEGORY_TOHAND)
  	e4:SetCode(EVENT_TO_GRAVE)
  	e4:SetCondition(s.retcon)
  	e4:SetTarget(s.rettg)
  	e4:SetOperation(s.retop)
  	c:RegisterEffect(e4)
  end
  function s.target(e, tp, eg, ep, ev, re, r, rp, chk, chkc)
  	if chkc then
  		return chkc:IsLocation(LOCATION_MZONE) and chkc:IsFaceup()
  	end
  	if chk == 0 then
  		return Duel.IsExistingTarget(Card.IsFaceup, tp, LOCATION_MZONE, LOCATION_MZONE, 1, nil)
  	end
  	Duel.Hint(HINT_SELECTMSG, tp, HINTMSG_EQUIP)
  	Duel.SelectTarget(tp, Card.IsFaceup, tp, LOCATION_MZONE, LOCATION_MZONE, 1, 1, nil)
  	Duel.SetOperationInfo(0, CATEGORY_EQUIP, e:GetHandler(), 1, 0, 0)
  end
  function s.operation(e, tp, eg, ep, ev, re, r, rp)
  	local c = e:GetHandler()
  	local tc = Duel.GetFirstTarget()
  	if c:IsRelateToEffect(e) and tc:IsRelateToEffect(e) and tc:IsFaceup() then
  		Duel.Equip(tp, c, tc)
  	end
  end
  function s.retcon(e, tp, eg, ep, ev, re, r, rp)
  	local c = e:GetHandler()
  	return c:IsPreviousLocation(LOCATION_SZONE) and c:IsReason(REASON_DESTROY) and c:GetPreviousEquipTarget() and not c:IsReason(REASON_LOST_TARGET)
  end
  function s.rettg(e, tp, eg, ep, ev, re, r, rp, chk)
  	if chk == 0 then
  		return e:GetHandler():IsAbleToHand()
  	end
  	e:GetHandler():CreateEffectRelation(e)
  	Duel.SetOperationInfo(0, CATEGORY_TOHAND, e:GetHandler(), 1, 0, 0)
  end
  function s.retop(e, tp, eg, ep, ev, re, r, rp)
  	local c = e:GetHandler()
  	if c:IsRelateToEffect(e) then
  		Duel.SendtoHand(c, nil, REASON_EFFECT)
  		Duel.ConfirmCards(1 - tp, c)
  	end
  end
  
  