I’d gotten the idea from the mage masks we used at the Star to neutralize magically capable detainees. The police-issue masks were a combination plastic hood and breathing tube that prevented the magician from seeing or speaking—easily duplicated by an old-fashioned cloth blindfold and gag. A white-noise generator, built into the hood and designed to prevent the magician from concentrating, was trickier to duplicate. But then I’d hit upon the idea of using the microreceiver that Rafael wore in his ear to monitor the ollamaliztli game broadcasts. If set between channels and cranked up loud, the resulting static would do the trick.