name: Eco,
card_text: When you take damage from an opponent's card effect: You can Special Summon this card from your hand, and if you do, inflict damage to your opponent equal to the damage you took, also both players take no further effect damage this turn.
lua: local s, id, o = GetID()
  function s.initial_effect(c)
  	--special summon
  	local e1 = Effect.CreateEffect(c)
  	e1:SetDescription(aux.Stringid(id, 0))
  	e1:SetCategory(CATEGORY_SPECIAL_SUMMON + CATEGORY_DAMAGE)
  	e1:SetType(EFFECT_TYPE_FIELD + EFFECT_TYPE_TRIGGER_O)
  	e1:SetRange(LOCATION_HAND)
  	e1:SetCode(EVENT_DAMAGE)
  	e1:SetCondition(s.spcon)
  	e1:SetTarget(s.sptg)
  	e1:SetOperation(s.spop)
  	c:RegisterEffect(e1)
  end
  function s.spcon(e, tp, eg, ep, ev, re, r, rp)
  	return ep == tp and 1 - tp == rp and bit.band(r, REASON_EFFECT) ~= 0
  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)
  	Duel.SetOperationInfo(0, CATEGORY_DAMAGE, nil, 0, 1 - tp, ev)
  end
  function s.spop(e, tp, eg, ep, ev, re, r, rp)
  	local c = e:GetHandler()
  	if c:IsRelateToEffect(e) and Duel.SpecialSummon(c, 0, tp, tp, false, false, POS_FACEUP) ~= 0 then
  		Duel.Damage(1 - tp, ev, REASON_EFFECT)
  		local e1 = Effect.CreateEffect(e:GetHandler())
  		e1:SetType(EFFECT_TYPE_FIELD)
  		e1:SetCode(EFFECT_CHANGE_DAMAGE)
  		e1:SetProperty(EFFECT_FLAG_PLAYER_TARGET)
  		e1:SetTargetRange(1, 1)
  		e1:SetValue(s.damval)
  		e1:SetReset(RESET_PHASE + PHASE_END)
  		Duel.RegisterEffect(e1, tp)
  		local e2 = e1:Clone()
  		e2:SetCode(EFFECT_NO_EFFECT_DAMAGE)
  		e2:SetReset(RESET_PHASE + PHASE_END)
  		Duel.RegisterEffect(e2, tp)
  	end
  end
  function s.damval(e, re, val, r, rp, rc)
  	if bit.band(r, REASON_EFFECT) ~= 0 then
  		return 0
  	else
  		return val
  	end
  end
  
  
source_text: Eco,
  When you take damage from an opponent's card effect: You can Special Summon this card from your hand, and if you do, inflict damage to your opponent equal to the damage you took, also both players take no further effect damage this turn.
target_text: -- Eco,
  local s, id, o = GetID()
  function s.initial_effect(c)
  	--special summon
  	local e1 = Effect.CreateEffect(c)
  	e1:SetDescription(aux.Stringid(id, 0))
  	e1:SetCategory(CATEGORY_SPECIAL_SUMMON + CATEGORY_DAMAGE)
  	e1:SetType(EFFECT_TYPE_FIELD + EFFECT_TYPE_TRIGGER_O)
  	e1:SetRange(LOCATION_HAND)
  	e1:SetCode(EVENT_DAMAGE)
  	e1:SetCondition(s.spcon)
  	e1:SetTarget(s.sptg)
  	e1:SetOperation(s.spop)
  	c:RegisterEffect(e1)
  end
  function s.spcon(e, tp, eg, ep, ev, re, r, rp)
  	return ep == tp and 1 - tp == rp and bit.band(r, REASON_EFFECT) ~= 0
  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)
  	Duel.SetOperationInfo(0, CATEGORY_DAMAGE, nil, 0, 1 - tp, ev)
  end
  function s.spop(e, tp, eg, ep, ev, re, r, rp)
  	local c = e:GetHandler()
  	if c:IsRelateToEffect(e) and Duel.SpecialSummon(c, 0, tp, tp, false, false, POS_FACEUP) ~= 0 then
  		Duel.Damage(1 - tp, ev, REASON_EFFECT)
  		local e1 = Effect.CreateEffect(e:GetHandler())
  		e1:SetType(EFFECT_TYPE_FIELD)
  		e1:SetCode(EFFECT_CHANGE_DAMAGE)
  		e1:SetProperty(EFFECT_FLAG_PLAYER_TARGET)
  		e1:SetTargetRange(1, 1)
  		e1:SetValue(s.damval)
  		e1:SetReset(RESET_PHASE + PHASE_END)
  		Duel.RegisterEffect(e1, tp)
  		local e2 = e1:Clone()
  		e2:SetCode(EFFECT_NO_EFFECT_DAMAGE)
  		e2:SetReset(RESET_PHASE + PHASE_END)
  		Duel.RegisterEffect(e2, tp)
  	end
  end
  function s.damval(e, re, val, r, rp, rc)
  	if bit.band(r, REASON_EFFECT) ~= 0 then
  		return 0
  	else
  		return val
  	end
  end
  
  