Honestly, i'm just asking the question. but to address yours, I don't see that attacks and base movement are related. In addition, the rules say it surrounds you. So you are attacking with it's manifestations. But the whole thing is fiction so it's not like it had to follow physics or logic for that matter. I just don't see base movement listed as a borrowed ability when many others are listed specifically. As I said above, GM can do whatever he wants, not trying to convince anyone that i'm right, just stating my interpretation.