Clara looks at it in her hand and shrugs. "I dunno what you'd call it. But I picked it out where all the others and the shields were. As soon as I picked it up it sort of shrank down like this. Am I offended that somehow a sword is just sentient enough to know I can't carry around a heavy weapon, or am I impressed?"

She hasn't decided yet.

"Anyway, I still need to find someone who knows anything about sword fighting to teach me." Future Clara would know that person is the Doctor, but she hasn't seen him sword fight yet.