The best thing to do with a toxic team mate.

toxic

Or mute them

You heard it hear folks! Intentionally make the other three people on your team lose just to get at that one troll! That'll really show em who's boss! It's not like I can just mute the troll either. It's a matter of honor! Kappa.

Eh I don't "make sure they lose", but I will not go out of my way to carry them. I just use the opportunity to test a new build or break the meta, cuz odds were we were gonna lose anyway with a toxic little turd on the team, so I may as well use the loss to experiment for games I actually have a good shot at winning.