fix

the BP should not be skipped unless the attack is actually negated by this effect

script/c18964575.lua

@@ -20,7 +20,10 @@ function c18964575.cost(e,tp,eg,ep,ev,re,r,rp,chk)
 	Duel.SendtoGrave(e:GetHandler(),REASON_COST+REASON_DISCARD)
 end
 function c18964575.operation(e,tp,eg,ep,ev,re,r,rp)
-	if Duel.NegateAttack() then
-		Duel.SkipPhase(1-tp,PHASE_BATTLE,RESET_PHASE+PHASE_BATTLE,1)
+	local at=Duel.GetAttacker()
+	if at:IsAttackable() then
+		if Duel.NegateAttack() then
+			Duel.SkipPhase(1-tp,PHASE_BATTLE,RESET_PHASE+PHASE_BATTLE,1)
+		end
 	end
 end