I'm proposing a buff to Inversion Charm because it actually actively harms Malamar. Swagger is a universal TM that inflicts confusion and reduces malamar's Attack stage by 4. Malamar is basically useless after one Swagger. a /flat reduction/ of 8 damage per hit and a 33% chance to just not move is absolutely bonkers.
Proposing that Inversion Charm gives Malamar an immunity to Swagger. Seriously, Malamar is worse than useless, and this wouldn't even make it that good. It'll make it slightly usable.
Discord chat says that a buff of "Contrary only affects moves that decreases stats" is more appropriate, so that's an option.
I've had a malamar for a year, used it once against a Tyranitar and lost, and would like to bring this back up again because it got utterly ignored last time. Its one gimmick is useless