@Riot Tantram For how long are people gonna get away with this kind of toxicity

So, I went to play ranked on my smurf, got into champ select. No one hovered a champion, we got into ban phase. Each of us bans a champion and one of my teammates (I think it was the adc) banned yi. Suddenly my jungler starts to rage at the adc in chat because "he banned his yi". Then he told us he will lose our game and that we could have been carried because he's sitting at 80% winrate. We get into the game, and he starts randomly dying under enemy towers/ in enemy jungle and writing things like "It's still winnable" and "Just focus, guys!". He did stop trolling when we started to win the game 4v5. We did win in the end, but this behavior is unacceptable and deserves a ban in my opinion.

EDIT: I can post some of the in game chat, but if someone from riot notices this I'll link the game's op gg and he can post both the in game and the champ select chat. Cheers!