"Oh, in case someone else comes along," Felix says brightly, talking fast. "Injured friends make better distractions than corpses, you know."

He has no idea if this will sway Naugus, but the appeal to self-interest is the only one with any chance of success. Self-interest and pride.

"And- of course, if they're dead they won't be able to bear witness to the feat of magic which overpowered them... so effortlessly. I've seen nothing like it." Look attentive, look relaxed...