What is your suggestion? I suggest that players need a certain amount of hours in bending to access ka (like cannon). Why do we need this? or What made you post this suggestion? We need this because ka isn't a place where new players should come and try to figure out bending - it interrupts any actual fights and basically closes off the arena to any benders wanting to 1v1. What are the possible negative aspects of your suggestion? I don't really see any. What are the positive aspects of your suggestion? Ka fights won't be interrupted and there won't be brand new players running around spamming blaze, airblast, or raiseearth. How can this suggestions be achieved on the server? Do the same thing that cannon has - a certain amount of playtime to unlock it.