User blog:Aay Bralor/Yang's Arm

I have a quiry which is how with Yang's semblance how was Adem able to cut off her arm. Here are some of the theories on that count. Please add yours.

1. Is it his sembance, to be able to cut anything? (Not likely)

2. HIs sword can cut through anything, but it has to be "charged" up by his semblance with which he can absorb enemy attacks and release and amplify that energy back at them through his sword.

I feel that my second theory is much more likely, however that the official description of his semblance is different as mine sounds very close to Yang's. Please give your thoughts; both on my theories, and your own.