How am I supposed to use this?

If it was like Barley's accessory, ok. But what use is it against assassins when most of them can just break it and CRUSH my Bea? It's not possible that its only use is as a barrier.

If it was like Barley's accessory, ok. But what use is it against assassins when most of them can just break it and CRUSH my Bea? It's not possible that its only use is as a barrier.