>>33107032>>33106864Team Plasma used Kyurem to freeze Opelucid City. I believe they did it to flex their muscles and show the region what their capable of, and to convince them to surrender before they fire again.
Honestly, it's a pretty good idea. I just with that a) we got to see them go further and blast more places, and b) they didn't fire from a flying ship. It was nice seeing a recurring base, but a plane would have looked cooler.