This is most broken character in whole game. So make him PVE only character. And see how PVP became more competitive and fair.
Or nerf him. Infinite invisibility for all team during one match is to op – make invisibility only for one most hurted character or for all but limited times during match per character. And do something with percentage of his tomohawk – I’m sick and tired from permanent 100% stun from enemie’s Mandrake and very rare stun from my. Luck thing in shooter game is totally puny thing.