The Ranger well knew the lethal potential of toxins and venoms secreted within other substances used by various monsters, animals, and other creatures. He knew enough to be as thorough as possible in his attempt to wipe away the slime...after all, this wasn't his first fight with strange and unearthly monstrosities...or even more mundane, but equally dangerous ones.
But of course, some substances could not easily be wiped away without more than a cloak edge. Cruallassar quickly became aware of his eyes watering unexplainedly...of a strange and irritating stinging in the lower edges of his still-closed eyes. It didn't take much to connect the dots. In the blink of an eye...not his eyes of course...he summoned a magic arrow from his bow, twirled it between his fingers, and as fast as he could, ran it lightly across the outside of his eyelids, scorching the flesh...and the most dangerous part of the toxin...from right eye corner across the bridge of the nose to left eye corner, and causing it to stick to the lower lid, protecting the eyes. As the elf grunted with pain...the first involuntary sound he had made since the fight began...he allowed the arrow to dissipate, its grim purpose furfilled. The Ranger would not be using his natural eyesight for the rest of this fight...but at least the eyes are intact to have their vision regained later. Now only his ethereal sight, and his highly trained and developed other four senses would let him detect his foes, and his ethereal sight added to his memorized image of the battlefield as the fight progressed will allow him to 'see' his environment. And now, he is far angrier than he began...this beast had turned out to be a canny thing indeed. Oh the Ranger would enjoy killing it.