Assault
Give a district weapons and it will assault other districts.
Picture two districts using weapons to assault each other from above. Like in a video game, with little arrows showing you where they're launching each assault.
おう
なぐ
None
This assault is all the 王's (おう) fault. The 王 gave the weapons to each of the districts on purpose so this would happen.
Picture the districts assaulting each other from above again, and then pan out and see the 王 standing above, watching it all happen. He's cackling.