Starting with patch 5.18, Riot is changing the punishment system to inform players immediately as to why they have offended and will be requiring that “toxic” players go through a few normal games on their best behavior before being allowed back in ranked play.
Lead Game Designer Jeffrey Lin also confirmed that the studio will be wiping the slate clean of prior offenses for season five play: “With the new upgraded restrictions we’ll be introducing in 5.18, we’ll be resetting all active chat and ranked restrictions. Consider this a fresh start for players with any current chat or ranked restrictions because as long as they stay sportsmanlike and do not get new chat or ranked restrictions by the end of season, they’ll get ranked rewards.”