He paused, and quickly cast the spell, running through the four levels of formula in his head. His view of the world shifted slightly, becoming fuzzier and slightly bluer, almost like pure moonlight. He was invisible to anyone who stepped within the area of the spell, but the spell didn't bend light around him and so wouldn't work against the heat-sensors Vathoss probably had in his eyes. What the spell did was insist to any onlookers in range that Kyle simply was not there. And, if he was lucky, they'd believe it.