Choice Band Marshadow @ Choice Band

Ability: Technician

EVs: 252 Atk / 4 SpD / 252 Spe

Jolly Nature

- Spectral Thief

- Shadow Sneak

- Close Combat

- Ice Punch

So yesterday I decided to ladder with Marshadow and new Megas and I'd like to briefly share my thoughts on this current metagame.The types that were most commonly used when I laddered were Water (Swift Swim), Fairy (Some regular others with Mega Gardevoir just trying it out I guess), Psychic (With Mega Gardevoir didn't see much Mega Gallade), Fighting, and Ghost.When I was laddering what I found alarming was how frequently Fighting was being used. This was very interesting because usually the "hype" for a new Pokemon or Mega Evolution dies down within two days even if it's a staple. This got me thinking why is Fighting so good in current metagame even with Fairy still running rampant in the current metagame. This lead me to the question of whether or not Marshadow is healthy for the Monotype metagame.The major take away is Marshadow's blazing base 125 Speed being able to outspeed majority of the metagame outspeeding fast threats such as Greninja and Gengar. With such a high speed stat Choice Scarf Marshadow is able to outspeed Sand Rush Excadrill in Sand, Ground's premier revenge killer. It also has a base 125 Attack stat which on paper doesn't seem impressive, but in practice it is extremely powerful especially with a Choice Band. On top of that it also has a decent Special Attack stat, which along with Technician allows it to use Hidden Power Ice and Fire. Marshadow may have good offenses and speed, but it also has decent bulk, which allows it to take most neutral hits with relative ease.Marshadow doesn't have much variety in it's movesets because it doesn't really need coverage because of its unresisted STAB coverage in Close Combat and Spectral Thief. It also has powerful priority in Technician Shadow Sneak, which allows it to take out frail faster attackers that can easily revenge kill it. Let's not forget it has Ice Punch or Hidden Power Ice to deal with Tank Garchomp and defensive Lando-T.I found that Choice Band is the best set because it simple 2HKOs the entire metagame and doesn't have any switch-ins. Comparing it to other powerful wallbreakers such as Landorus and Kyurem-B, Marshadow has good bulk like these wallbreakers, but what sets it apart is its base 125 speed (compared to base 101 and 95 speed of Landorus and Kyurem-B), which almost invalidates offense in Monotype.I saw a bit of Choice Scarf Marshadow as alternative way of speed control over Gengar. This would allow Gengar to run Taunt or Ghost Z instead of usual Choice Scarf. Alternatively, I saw Life Orb (With Hidden Power Ice) so that Marshadow can switch up moves, but the raw power of Choice Band is too good to pass up.Let's talk about what I used and saw that was used to combat MarshadowChoice Scarf Meloetta was on every Psychic team I built which is a red flag because outside of checking Marshadow Choice Specs is a better option on Psychic for its wallbreaking ability. Choice Scarf Meloetta takes up a valuable slot on Psychic teams sacrificing other matchups to avoid autolosing to Marshadow.Same Psychic I had to run Choice Scarf Meloetta over Choice Scarf Ditto, which left my team susceptible to set up sweepers such as Mega Pinsir and Volcarona. When building a Normal team I had a choice either autolosing to Marshadow or being extremely weak to set up sweepers. With Marshadow I don't even see normal as viable option to use in the current metagame.This was basically whichever Marshadow was faster and KOed opposing Marshadow won, which is not healthyI was forced to run Zen Headbutt Terrakion over Iron Head so that I can put decent dent into Marshadow. This change left my Fighting team unable to hit Fairy-types so Fairy became somewhat a problematic matchup. Otherwise it's who can get use Marshadow to get rid of Mega Gallade first.The 2 Steel teams I saw on ladder just lost to Marshadow at team preview. Marshadow basically takes Steel out of metagame like Talonflame did to Grass, Fighting, and Bug in ORAS.Water doesn't have a switch-in so I ran Choice Scarf Greninja to revenge kill non Choice Scarfed variants, but it was still extremely hard to KO. I had to run a more defensive Water team to be successful, Marshadow basically makes balanced Water almost unviable in metagame (Balanced Water still has to deal with Tapu Koko and Bulu too). Swift Swim is by far the best option in the current metagame so that Marshadow can easily be checked, but it cannot be countered by one of most versatile types in the metagame.Fairy has no switch-ins so the best way is to revenge kill it (Choice Scarf Togekiss) or to paralyze it with Thunder Wave Klefiki. Fairy is one of types that is still good with Marshadow in the metagame, but it isn't as good as it was before Marshadow.I saw Ground once and it doesn't have a switch-in to Marshadow although Choice Band Sand Rush Excadrill(it's already pressured to revenge kill Mega Gallade and Keldeo) can revenge kill non Scarfed variants.I could keep going, but these were the most obvious and easiest to point out Marshadow's impact on the metagame.I know most people are calling for a suspect, but I think a quickban is justified in this situation because of how impactful Marshadow has been in short time it has been in the metagame.