Ah. Glad the city’s still able to put on entertainment.

( A beat on his end, before his own unhappy admission; less experienced, less knowledgeable, without all the weight of decades’ personal history to speak from, but Strange is technically in this boat with them. )

I would think control. Circles could already be bad enough, a form of control. And if you already have the capacity to make one Tranquil, why not all of them: all mages, all rifters, threats neutralised.