name: Mirror
card_text: Halve the ATK of your opponent's attacking monsters. Once per turn, during your Standby Phase, pay 2000 LP or destroy this card.
lua: local s, id, o = GetID()
  function s.initial_effect(c)
  	--activate
  	local e1 = Effect.CreateEffect(c)
  	e1:SetType(EFFECT_TYPE_ACTIVATE)
  	e1:SetProperty(EFFECT_FLAG_DAMAGE_STEP)
  	e1:SetCode(EVENT_FREE_CHAIN)
  	e1:SetHintTiming(0, TIMING_DAMAGE_STEP)
  	e1:SetCondition(aux.dscon)
  	e1:SetTarget(s.target)
  	e1:SetOperation(s.operation)
  	c:RegisterEffect(e1)
  	--
  	local e2 = Effect.CreateEffect(c)
  	e2:SetType(EFFECT_TYPE_FIELD + EFFECT_TYPE_CONTINUOUS)
  	e2:SetCode(EVENT_ATTACK_ANNOUNCE)
  	e2:SetRange(LOCATION_SZONE)
  	e2:SetOperation(s.operation)
  	c:RegisterEffect(e2)
  	--atkchange
  	local e3 = Effect.CreateEffect(c)
  	e3:SetType(EFFECT_TYPE_FIELD)
  	e3:SetCode(EFFECT_SET_ATTACK_FINAL)
  	e3:SetRange(LOCATION_SZONE)
  	e3:SetTargetRange(0, LOCATION_MZONE)
  	e3:SetTarget(s.atktg)
  	e3:SetValue(s.atkval)
  	c:RegisterEffect(e3)
  	local g = Group.CreateGroup()
  	g:KeepAlive()
  	e1:SetLabelObject(g)
  	e2:SetLabelObject(g)
  	e3:SetLabelObject(g)
  	--maintain
  	local e4 = Effect.CreateEffect(c)
  	e4:SetType(EFFECT_TYPE_FIELD + EFFECT_TYPE_CONTINUOUS)
  	e4:SetProperty(EFFECT_FLAG_CANNOT_DISABLE + EFFECT_FLAG_UNCOPYABLE)
  	e4:SetCode(EVENT_PHASE + PHASE_STANDBY)
  	e4:SetRange(LOCATION_SZONE)
  	e4:SetCountLimit(1)
  	e4:SetCondition(s.mtcon)
  	e4:SetOperation(s.mtop)
  	c:RegisterEffect(e4)
  end
  function s.target(e, tp, eg, ep, ev, re, r, rp, chk)
  	if chk == 0 then
  		return true
  	end
  	e:GetLabelObject():Clear()
  end
  function s.operation(e, tp, eg, ep, ev, re, r, rp)
  	local a = Duel.GetAttacker()
  	if a and a:IsControler(1 - tp) and a:IsFaceup() and a:IsLocation(LOCATION_MZONE) then
  		e:GetLabelObject():AddCard(a)
  		if a:GetFlagEffect(id) == 0 then
  			a:RegisterFlagEffect(id, RESET_EVENT + RESETS_STANDARD, 0, 1)
  		end
  	end
  end
  function s.atktg(e, c)
  	return c:GetFlagEffect(id) ~= 0 and e:GetLabelObject():IsContains(c)
  end
  function s.atkval(e, c)
  	return math.ceil(c:GetAttack() / 2)
  end
  function s.mtcon(e, tp, eg, ep, ev, re, r, rp)
  	return Duel.GetTurnPlayer() == tp
  end
  function s.mtop(e, tp, eg, ep, ev, re, r, rp)
  	if Duel.CheckLPCost(tp, 2000) and Duel.SelectYesNo(tp, aux.Stringid(id, 0)) then
  		Duel.PayLPCost(tp, 2000)
  	else
  		Duel.Destroy(e:GetHandler(), REASON_COST)
  	end
  end
  
  
source_text: Mirror
  Halve the ATK of your opponent's attacking monsters. Once per turn, during your Standby Phase, pay 2000 LP or destroy this card.
target_text: -- Mirror
  local s, id, o = GetID()
  function s.initial_effect(c)
  	--activate
  	local e1 = Effect.CreateEffect(c)
  	e1:SetType(EFFECT_TYPE_ACTIVATE)
  	e1:SetProperty(EFFECT_FLAG_DAMAGE_STEP)
  	e1:SetCode(EVENT_FREE_CHAIN)
  	e1:SetHintTiming(0, TIMING_DAMAGE_STEP)
  	e1:SetCondition(aux.dscon)
  	e1:SetTarget(s.target)
  	e1:SetOperation(s.operation)
  	c:RegisterEffect(e1)
  	--
  	local e2 = Effect.CreateEffect(c)
  	e2:SetType(EFFECT_TYPE_FIELD + EFFECT_TYPE_CONTINUOUS)
  	e2:SetCode(EVENT_ATTACK_ANNOUNCE)
  	e2:SetRange(LOCATION_SZONE)
  	e2:SetOperation(s.operation)
  	c:RegisterEffect(e2)
  	--atkchange
  	local e3 = Effect.CreateEffect(c)
  	e3:SetType(EFFECT_TYPE_FIELD)
  	e3:SetCode(EFFECT_SET_ATTACK_FINAL)
  	e3:SetRange(LOCATION_SZONE)
  	e3:SetTargetRange(0, LOCATION_MZONE)
  	e3:SetTarget(s.atktg)
  	e3:SetValue(s.atkval)
  	c:RegisterEffect(e3)
  	local g = Group.CreateGroup()
  	g:KeepAlive()
  	e1:SetLabelObject(g)
  	e2:SetLabelObject(g)
  	e3:SetLabelObject(g)
  	--maintain
  	local e4 = Effect.CreateEffect(c)
  	e4:SetType(EFFECT_TYPE_FIELD + EFFECT_TYPE_CONTINUOUS)
  	e4:SetProperty(EFFECT_FLAG_CANNOT_DISABLE + EFFECT_FLAG_UNCOPYABLE)
  	e4:SetCode(EVENT_PHASE + PHASE_STANDBY)
  	e4:SetRange(LOCATION_SZONE)
  	e4:SetCountLimit(1)
  	e4:SetCondition(s.mtcon)
  	e4:SetOperation(s.mtop)
  	c:RegisterEffect(e4)
  end
  function s.target(e, tp, eg, ep, ev, re, r, rp, chk)
  	if chk == 0 then
  		return true
  	end
  	e:GetLabelObject():Clear()
  end
  function s.operation(e, tp, eg, ep, ev, re, r, rp)
  	local a = Duel.GetAttacker()
  	if a and a:IsControler(1 - tp) and a:IsFaceup() and a:IsLocation(LOCATION_MZONE) then
  		e:GetLabelObject():AddCard(a)
  		if a:GetFlagEffect(id) == 0 then
  			a:RegisterFlagEffect(id, RESET_EVENT + RESETS_STANDARD, 0, 1)
  		end
  	end
  end
  function s.atktg(e, c)
  	return c:GetFlagEffect(id) ~= 0 and e:GetLabelObject():IsContains(c)
  end
  function s.atkval(e, c)
  	return math.ceil(c:GetAttack() / 2)
  end
  function s.mtcon(e, tp, eg, ep, ev, re, r, rp)
  	return Duel.GetTurnPlayer() == tp
  end
  function s.mtop(e, tp, eg, ep, ev, re, r, rp)
  	if Duel.CheckLPCost(tp, 2000) and Duel.SelectYesNo(tp, aux.Stringid(id, 0)) then
  		Duel.PayLPCost(tp, 2000)
  	else
  		Duel.Destroy(e:GetHandler(), REASON_COST)
  	end
  end
  
  