Competitive Kay_O

They do this for all new agents. One reason is learning to counter-play an agent can take time, and usually always happens slower than learning some alright strats with the agent. Another is any major bugs that show up after release. Any balance changes the agent might need. While Riot usually waits to see how the agent will do in competitive before they swing the nerf or buff hammer. But one change I can remember is to Kill Joy's nanoswams, on launch they activated almost instantly, giving zero time to get out were just OP. So Riot changed that really quick ones it became apparent.

This will also happen with maps and why Breeze didn't get play time till weeks after its release.