--リバース・バスター
function c90640901.initial_effect(c)
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetCode(EFFECT_CANNOT_SELECT_BATTLE_TARGET)
	e1:SetValue(c90640901.vala)
	c:RegisterEffect(e1)
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_SINGLE)
	e2:SetCode(EFFECT_CANNOT_DIRECT_ATTACK)
	c:RegisterEffect(e2)
	--actlimit
	local e3=Effect.CreateEffect(c)
	e3:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_CONTINUOUS)
	e3:SetCode(EVENT_ATTACK_ANNOUNCE)
	e3:SetOperation(c90640901.atkop)
	c:RegisterEffect(e3)
	--destroy
	local e4=Effect.CreateEffect(c)
	e4:SetDescription(aux.Stringid(90640901,0))
	e4:SetCategory(CATEGORY_DESTROY)
	e4:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_F)
	e4:SetCode(EVENT_BATTLE_START)
	e4:SetCondition(c90640901.descon)
	e4:SetTarget(c90640901.destg)
	e4:SetOperation(c90640901.desop)
	c:RegisterEffect(e4)
end
function c90640901.vala(e,c)
	return not c:IsFacedown()
end
function c90640901.atkop(e,tp,eg,ep,ev,re,r,rp)
	local e1=Effect.CreateEffect(e:GetHandler())
	e1:SetType(EFFECT_TYPE_FIELD)
	e1:SetProperty(EFFECT_FLAG_PLAYER_TARGET)
	e1:SetCode(EFFECT_CANNOT_ACTIVATE)
	e1:SetTargetRange(0,1)
	e1:SetValue(c90640901.aclimit)
	e1:SetReset(RESET_PHASE+PHASE_DAMAGE)
	Duel.RegisterEffect(e1,tp)
end
function c90640901.aclimit(e,re,tp)
	return re:IsHasType(EFFECT_TYPE_ACTIVATE)
end
function c90640901.descon(e,tp,eg,ep,ev,re,r,rp)
	local d=Duel.GetAttackTarget()
	return e:GetHandler()==Duel.GetAttacker() and d and d:IsFacedown() and d:IsDefensePos()
end
function c90640901.destg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	Duel.SetOperationInfo(0,CATEGORY_DESTROY,Duel.GetAttackTarget(),1,0,0)
end
function c90640901.desop(e,tp,eg,ep,ev,re,r,rp)
	local d=Duel.GetAttackTarget()
	if d:IsRelateToBattle() then
		Duel.Destroy(d,REASON_EFFECT)
	end
end
