https://www.youtube.com/watch?v=uaF9iJ9bzUMGalarian Weezing has an ability that neutralizes all other abilities
Room Service is a held item that lowers pokemon's speed for Trick Room
Eject Pack is a held item that switches out a pokemon when its stats are lowered
Corviknight has an ability that reflects all stat lowering effects
Dynamax power shrugs off moves that cause flinching? And some attacks can have extra effects I guess?