As a result of general commentary in the Discord server and in the metagame discussion thread, the council has decided to open up discussion for a certain trending set in the ladder: Focus Sash Marshadow.
With over a 50% of usage among all Marshadow seen at high ladder play, sets involving this item have remained as a trend, and this has started to be seen as a concern ever since Xerneas was banned to partially mitigate this.
Marshadow stands in the current metagame as a top threat, and that comes from a variety of positive traits including a practically unresisted type combination, strong move options in Poltergeist and Low Kick, several coverage options between Rock Tomb, Ice Punch, and the far more niche Close Combat, and of course compressing utility between priority in a Technician-boosted Shadow Sneak and Spectral Thief, the last of which allows Marshadow to flip the momentum of setup sweepers.
Marshadow is on paper held back by its stats defensively speaking being almost average at best, so it can't just come into foes such as Coil Zygarde, Calm Mind Arceus formes, or even revenge kill foes such as a healthy Dragon Dance Necrozma-DM or Mega Mewtwo Y, however, Focus Sash removes such limitations, ensuring that Marshadow lives any attack once, allowing it to flip the matchup against the before-mentioned foes and more, outclassing Ditto by having more innate offensive traits over heavily relying on momentum and whatever the other team has in the first place. Marshadow also retains a dangerous STAB combination without a choice lock after stealing the stat boosts of a foe, allowing it to potentially end games, in particular being able to backfire Zacian-C's Intrepid Sword and OHKO it with Spectral Thief, and using its Focus Sash as a safety net against foes it doesn't manage to OHKO like Coil Zygarde, especially when entry hazards aren't a factor.
Ultimately, this is a open discussion thread on the matter, to gather the general thoughts and reasonings of the community over if any tiering action should be done to Focus Sash Marshadow to raise the quality/liking of the metagame.
It's to be noted that this is not a suspect test, this is merely measuring general opinions on the matter to then potentially make an informed decision. Please be respectful when posting and arguing with other users.
is a great offensive tool in the current NatDex Ubers landscape, not fearing top threats such as 
and it even has a chance to OHKO 
after a layer of Spikes, for all the tournament nerds out there. A moveset of Shadow Sneak, Endeavor, Rock Tomb, Spectral Thief ensures maximum effectivity against setup sweepers and many top threats. I would not recommend Poltergeist as its 90% accuracy means Spectral Thief does more damage on the long run, and if you break the opponent's 
and 
and it can not even be dealt with with tera as Tera Ghost means a Ghost weakness and Tera Normal means a Fighting weakness. And if it steals a Meteor Beam Boost from a cringemon such as 
It can start a sweep as its moves are now boosted even further with the Special Attack raise. Therefore I think Focus Sash Marshadow is banworthy
