According to the latest 2016 League of legends Update Riot is including a new Loot system it stats that at the end of every match players will get a random selection of loots and drops or may be chest keys. Using the Key to a chest will unlock a random prize including character skins or may be full characters, unwanted keys can be used in crafting system, but it would not be available for the player who will have a bad behavior in-game. The lead social system game designer Jeffrey Lin of Polygon said that this loot system is only for the players with the positive behavior. In his words
“We’ve never been able to give skins for free before in League of Legends, so this is our way of saying, ‘Hey, if you’re a positive player in the game, here’s your way of earning something just for playing the game and being awesome,’”
After Riot will implant the new character system this loot system will be introduced it will join the other toxicity systems such as tribunals and honour.