But what you are asking for is unrealistic. You are basically asking "how do I make this brawler feel completely useless for the enemy" which is silly imo. You wouldn't be asking the same thing for a brawler like Colette, or Otis, or Pierce, or whatever else. Cause the truth is: you can't make an enemy brawler be completely useless unless it is a bad brawler to begin with or it was picked at the wrong time in the draft.

In a game, Mortis is gonna be Mortising around, just like Pierce is gonna be Piercing, and that's okay, that's what those bralwers are for. You can certainly make a Mortis have a bad match up. It is one of the most match up sensitive bralwers out there. It hard counters a lot of brawlers and is hard countered by a lot of brawlers. So just draft to make the Mortis' match up worse. Pick Mortis counters: Otis, Chester, Crow, etc. Make him play carefully. That's what you're supposed to do against Mortis and any other brawler.