Last night I played a game where a brimstone was just running around bugging everybody's sound. I'm not sure how he did it, but it involved pulling up and putting away an ability so fast that it made a shrieking noise that drowned out everything. He would follow his teammates making this noise and you actually couldn't hear anything. I was killing people and not realizing because the kill sound was drowned out by this shrieking. Played 5 rounds and my team FF'd a 2-3 because it was just screaming into our ears.