You got to admit, that's a pretty sweet ability. Making Pseudo-copies of any hunter weapon she's seen. A jack-of-all-trades if you will. She might not have any outstanding attributes on an individual basis but she can adapt to change better than anyone else.
A very fitting power for our little bunny who's only trying to gain respect from humans.
It's basically the kind of ability that makes you think "god, good thing she's on our side"
My guess, from reading discussions and rewatching the scene: Her weapon is
a hard-light generator, linked to her camera, so it generates weapons from her photos. Uses are limited since she "spent all semester saving [them] up" in the previous volume, and had to "make them count" in this episode. Its distinct sound effect (all weapons and semblances have one according to Monty and the producers) is tron-like "materialisation"? Kinda hard to describe.
Her semblance is
mimicry, she can copy the movement styles of other characters like Ruby's jump, Weiss's parry, and Yang's jump-punch etc. I couldn't hear its sound effect though so maybe it's not her semblance.
You got to admit, that's a pretty sweet ability. Making Pseudo-copies of any hunter weapon she's seen. A jack-of-all-trades if you will. She might not have any outstanding attributes on an individual basis but she can adapt to change better than anyone else.
A very fitting power for our little bunny who's only trying to gain respect from humans.