Lucioball is a new Overwatch mode that alters the way the game is played. Basically, it turns the shooter into a 3v3 soccer game where everyone is Lucio. Except people have found a new Overwatch exploit. If you’re quick, you can find yourself using another character in the fight. Which, as you can imagine, isn’t fun for all those Lucios.
Here’s how to use this Overwatch exploit. Start a Lucioball match. After finding a match, press “H” on PC or left on the D-pad on console. You’ll then be assigned a random character who probably won’t be Lucio. Craziness ensues.
Though, you probably want to avoid taking advantage of this. Blizzard has said on the forums that it is aware of this Overwatch exploit and will punish people who use it. If you don’t want to run into trouble with your account, it’s best to let this bug slip past. Better not to risk repercussions for a few moments of fun.
Source: Battle.net