Talk:Pyrrha Nikos/@comment-199.79.169.163-20141030002425/@comment-4010415-20141030121248

She didn't even actually touch his boot at all. It came close, and then she held her hand up close to it and moved it with her semblance while moving her hand to make it look, to the audience in the bleachers, like she actually pushed it away with her hand.

I think the reason Mercury and Emerald figured out that her semblance is specifically moving metal was because they had been observing her before Mercury went in and sparred her. He chose to spar her because he wanted to confirm what she was doing. Hell, during the Pyrrha vs CRDL spar, he might have noticed that her shield returned to her arm flawlessly, almost as if it was magnetically attracted to her arm.