"Oh good," Muttered the fallen angel, mostly to himself as he summoned the clothes back onto himself as he stood, still sore, "he's laughing, that means he's alive." He called the bird down to him and she landed on his shoulder, still visibly agitated, chattering at him angrily before he made her focus on what he needed to see. He walked up to Ariel, and held out a hand. "Up, you, the ground is not your resting place yet."
Despite the sadness and immense longing and loss he felt, Mephisto couldn't help but be in good spirits, even temporarily. "You've found what was lost to oblivion, now what can I do for you?" It seemed a fair enough time for a good trade. After all, he hadn't even thought that the spell would work, much less have much effect on him. Sure, he wasn't entirely clean of all corruption, but the nao sha was only supposed to scrape away six layers, so to speak. It would take more than that to get him back to his original fallen state.