--BF－バックフラッシュ (anime)
--Blackwing - Backlash (anime)
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_DESTROY)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_ATTACK_ANNOUNCE)
	e1:SetCondition(s.condition)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
s.listed_series={0x33}
function s.cfilter(c)
	return c:IsSetCard(SET_BLACKWING) and c:IsMonster()
end
function s.condition(e,tp,eg,ep,ev,re,r,rp)
	return tp~=Duel.GetTurnPlayer() and Duel.GetAttackTarget()==nil
		and Duel.IsExistingMatchingCard(s.cfilter,tp,LOCATION_GRAVE,0,5,nil)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(aux.TRUE,tp,0,LOCATION_MZONE,1,nil) end
	local g=Duel.GetMatchingGroup(aux.TRUE,tp,0,LOCATION_MZONE,nil)
	Duel.SetOperationInfo(0,CATEGORY_DESTROY,g,#g,0,0)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetMatchingGroup(aux.TRUE,tp,0,LOCATION_MZONE,nil)
	if #g>0 then
		Duel.Destroy(g,REASON_EFFECT)
	end
end