I have had to use such power in self-defense before, yes.

[Chilton watched as Baelish touched the back of his hand; he had the distinct sensation of being appraised. Probably nothing, he reasoned, just his nerves. The anxiety of Raina's departure would inevitably seep into every emotion he experienced from hereon out.]

A few times, actually. It is a highly convenient escape clause -- one I tend to be quiet about.

[Rincewind knew, of course, as had Raina. Both required sedatives for medicinal use. And recently, Chilton had alluded to his ability to Will, thinking that the profiler had already known. Now that number rounded out with Petyr Baelish.]

Works like a charm.