Korrin doesn't trust the Venatori to stay away; if her guess means anything, Lena will soon get her wish. Until then, at least she can keep her busy. As the toxic cloud forms, she conjures that static cage while they're staggering about, entrapping a good many of them. For those not caught in the cage and being fried when they tried to leave, she doesn't leave them out of the run. It's Chain Lightning time.