Would the shade have to stop combat for even a second to use said magic? If he did, i would give it to Altair due to action and reaction times, and skill with a blade. Btw, he walks up and stabs him, like a low-profile kill. Altair killed peopel with no knowledge of their appearance, only their names and city they were in. I would think that shows superior quality as an assassin if the shade has to have a physical description.