You can drop your game once you're into loading screen or into the game. You proceed to go to (C> Riot Games> League of Legends> RADS> Solutions> lol_game_client_sln> Releases> 0.0.0.248> deploy> lastCmd - In here copy the IP and the port.
Once you have the ip what do you do just ddos it? please explain more.
I DDoS with some booter, Jay Booter, or i could create my own botnet...
The hard part like i said, is get the player IP.