The sacrifice of mortals to work some dark ritual or other is not unfamiliar to him, so he doesn't even blink at the memory that swims out of the dark, surfacing at the top of Fenris' thoughts.

"So to be a magic-user in your world is to walk this Fade," he says, in the tone of someone trying to lay out the information for his own benefit out loud, "and that provides. But they are constantly tempted to embrace bloodier, more potent powers by demons and spirits, who also walk the Fade, for they require...the living to cross over from that plane to the physical, I assume."

He contemplates what he's learned for a moment, and then shakes his head. "A difficult problem," he says dryly. "It is a common thing for foolish wizards to deal with demons and devils in Faerun, but there are rules they must obey, spells that can banish them. A mage in your world sounds as if they are hounded all their lives by such creatures, without respite. I am not surprised you hold the stance on magic that you do if many of them succumb to temptation."

Those without the will to continue inevitably weaken and give in to such corruptions; from what little he knows of Fenris' world, it seems just a simple inevitability, a thing to plan around. It's reflected as much in his utterly neutral tone.