Click shift gear/trick room and win
This thing is one of the reasons they banned speed pass, but there's so many ways to circumvent the low speed that it didn't matter any way. It's so ridiculously bulky that nothing in the tier can one shot it that isn't frail, weak to one of the moves it can potentially have or incredibly situational.
And that goes without mentioning the fact that it has the same issue as greninja. It's very hard to guess the moveset that it's running and by the time you've guessed it, it's already too late. Is it running assault vest? Is it running twinkle tackle? Is it running ice beam/thunderbolt/aura sphere or is it running fleur cannon/flash cannon?
I completely understand why nothing has happened with Lando. It keeps the tier together and stops physical sweepers from being auto win. But this thing is side by side with it in usage and not for a good reason.
Nothing (that is standard in OU) switches into this shit 100% safely. Every time it comes out, you have to sac something.
tl;dr pls ban smogon