The Ranger closes rapidly, seeing through his ethereal sight the monstrosity move to lie in wait for the lost traveler he had noted. Who had seemed to light his sword up as a torch...an obvious target. An easy prey. An excellent distraction. But Cruallassar has no intention of allowing him to get killed if he can help it...he would likely not be able to reach them before the trap was sprung, but the elf is a Ranger. No Ranger has any need of getting to close quarters to kill. As Cruallassar swerves onto a course that gives him a line of sight to the target, he slows slightly, slipping his bow off his back and flipping an arrow from his quiver. Under many circumstances he would not bother with an arrow, and merely summon a magical projectile from the bow itself...but it was more difficult to conceal his location when the shot looks like a streak of light straight to his previous position, and anyway, another arrow would serve his purpose better. That which he nocks is one of his high-velocity arrows, perfect for an initial stealth strike when only his position needed concealing...the loud sonic boom from the shot would do nicely in adding to the confusion. As he sights in on the glowing spot that is the monster lying in ambush...not able to target any vulnerable points due to difficulty distinguishing them in the mass that is it's aura...he draws the arrow back to one ear, slowing to a stop just before releasing it, sending it speeding on it's way towards the impending boom that would signal it's sudden acceleration to three times the speed of sound, an instant before impact with the creature who had the serious misfortune of being the target.