Parries, and if I charge it with mana, it blasts wind that knocks enemies back. But it works with my other weapon in interesting ways....

[The crystal staff begins to glow a blue-green color where Dust's hand wraps around its grip. As mana flows into it, currents of wind begin to writhe around it in turn, visible in the way they twist dust and dirt in the air around it. A moment later, the sword begins to glow that same color, as a line of wind so tight and compressed it is visible on its own merits forms just above the rounded curve that ought to be a blade.]

Now it cuts.