What happens after reporting a griefer?
A Rengar in our game was jungling, and about 15 minutes in (with our team in the lead) the LB asked if she could have blue, to which the Rengar replied "I don't give blue to losing lanes". It was downhill from there, and the Rengar griefed by staying in the jungle and split-pushing (without going all the way to the towers). It was quite unbelievable, honestly, and I just can't get through my head how someone can be so childish. We eventually lost because Rengar did not participate in a single teamfight for the remainder of the game.
I reported both of them because the LB kept on fighting with him instead of leaving him alone. I put the Rengar on mute and asked the LB to please stop so we can play the game.
What does Riot typically do about these situations? There's no more Tribunal and the only programs that are public is the leaver buster and the new quick-turn punishment system that focuses on raging and negative language.