Quote Originally Posted by lord_khaine View Post
According to the wiki, The Black Art is the art of creation, of making something out of nothing.
It has no known wielders, so i suspect its more likely a White art she used.
She didn't use The Art at all, no words = no spell, what she did was channel the power of the Key to make her Will manifest as Zoss' Blade of Want. If anything she used The Art of Cutting(which has the same effect but different mechanism as the White Art) the same way Maya and 6 Juggernaut Star do, sublimating her Self to the Act so perfectly so as to make her will manifest.