"Had not heard that. Makes sense. Even if one is nigh omniescent, one cannot be everywhere. Specialists allow one to be in many places, for many purposes. However, must continue work. Made a promise. Won't break that. Work comes first, am not a mercenary, after all." He nods, as he pulls out a small vial of his latest concoction. "Have to block out all sunlight, or will burn. Quite painful, as pain doesn't fade for months. Much less pleasant than getting balance of ingredients wrong, and setting off explosion. Completely removed my head. Hurt, but that pain faded." He gestures to the hole in the wall, which he'd patched up carefully. "Lost three days for that. But, yes, block out all light, no light to see by. Can't be seen, of course, but when all light is gone, not even perfect night vision can see. Working on method to see from outside body, allow for sight while body does not need light. Limited application, of course, but valuable."