--Return Damage
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_PRE_DAMAGE_CALCULATE)
	e1:SetCategory(CATEGORY_DAMAGE)
	e1:SetProperty(EFFECT_FLAG_PLAYER_TARGET)
	e1:SetCondition(s.con)
	e1:SetTarget(s.tg)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
function s.con(e,tp,eg,ep,ev,re,r,rp)
	return Duel.GetBattleDamage(tp)>0
end
function s.tg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	Duel.SetTargetPlayer(1-tp)
	Duel.SetTargetParam(Duel.GetBattleDamage(tp))
	Duel.SetOperationInfo(0,CATEGORY_DAMAGE,nil,0,1-tp,ev)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	local e1=Effect.CreateEffect(e:GetHandler())
	e1:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_CONTINUOUS)
	e1:SetCode(EVENT_PRE_BATTLE_DAMAGE)
	e1:SetOperation(s.damop)
	e1:SetReset(RESET_PHASE+PHASE_DAMAGE)
	Duel.RegisterEffect(e1,tp)
	local p,d=Duel.GetChainInfo(0,CHAININFO_TARGET_PLAYER,CHAININFO_TARGET_PARAM)
	Duel.Damage(p,d,REASON_EFFECT)
end
function s.damop(e,tp,eg,ep,ev,re,r,rp)
	Duel.ChangeBattleDamage(tp,0)
end