SHED TAIL
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SHED TAIL-THE NERF

Initially the reason for cyclizar being banned over shed tail as a move was that the only other shed tail user was orthworm which many(myself included) believed at the time was not broken as compared to cyclizar which had regenerator,knock off,rapid spin,uturn and was extremely fast while being able to run surprise strong moves like draco meteor or overheat to catch pokemon off guard and so everyone had come to the conclusion that we should ban cyclizar instead of shed tail since for a move to be banned it should prove that multiple pokemon are made by broken by it,along with this at the time we also had many broken pokemon allowed,most notably espathra and annihilape were there which were considered the best shed tail abusers and so the council made a decision to quickban all of cyclizar,annihilape and espathra(they weren't banned together,first cyclizar and annihilape was banned but espathra followed shortly after)
SHED TAIL-THE RISE

After cyclizar,annihilape and espathra being quickbanned most assumed shed tail is not so good anymore and for a while that was the case but slowly people started to explore it more and more and realised orthworm wasnt all that bad,it was just outshined by cyclizar at the time but can def pull its own weight on the team,thx to its unique ability in earth eater while being a steel type with a enormous base 145 def stat,it can shed tail on a plethora of common ou mons,some examples being:

(non bpress or cc version)

(For some of these examples it requires orthworm being at full to shed tail but it can be the rest talk set and meet that condition)
Looking at this it might seem like a lot of mons and yes that's the thing,it can successfully shed tail on a lot of mons!
There is another extremely key aspect of shed tail from orthworm which differentiates it from cyclizar's shed tail completely which is that orthworm is
extremely slow as compared to cyclizar who was extremely fast which gives it the opportunity to soak up the hit itself before shed tailing giving whatever sweeper comes in a
free substitute with no damage taken,considering you bring out a pokemon that takes advantange of opposing pokemon you now have a free turn to setup with them switching and another free turn of setup as they break your substitute,now add tera into the mix and it can become even more turns of u getting to setup,obviously this doesn't happen all the time but this is a very realistic scenario which the opponent can barely recover from,a lot of these setup sweepers also run moves like taunt or encore which messes with potential unaware threats or other defensive pokemon's ability to check it.Now it makes it 10x worse that the shed tail abusers themselves are extremely good and strong pokemon and with booster energy it bolsters their offenses even more or makes them super fast making it basically impossible to revenge outside priority and when these mons get a undamaged free substitute up,its generally just game right there.
DEBUNKING SOME COUNTER ARGUMENTS OF WAYS TO CHECK IT:
Red Card :
Red Card isn't a consistent shed tail counter play,as I mentioned above the shed tail sweepers are usually extremely strong pokemon in their own right and
red card requires the holder to take the hit and live,so you usually cant even bring out your red card pokemon right infront of the sweeper since you risk being ohko'd,so you have to bring out a pokemon which baits the opponents move which your red card pokemon can live and double on it which well your opponent can predict too and gg what happened to your counter play now?reading this itself should make you realise its not a consistent answer,also doesnt help that red card isnt a top tier item anyways and the mons would much rather hold items like leftover's or heavy duty boots than this.Another note:Most people who have played the game enough at high level know the pokemon's which may hold red card,most common example being:

so that makes it even harder for the red card user to bait opponents move to red card him out
Whirlwind :
The only pokemon which runs whirlwind is 
,Mons like roaring moon can taunt it to prevent whirlwind while mons like baxcalibur and iron valiant can icicle spear and moonblast respectively both of which are super effective on it and chunks it heavily,which also means it requires your ting lu to be at near full to be able to take on these hits,hence this
isnt a good enough counter play as only one pokemon runs it and the abusers have ways to damage it heavily or stop it.
Taunt/Encore : Mostly encore is run by offensive pokemon which are also usually comparatively frail and for encore to work the user would need to be slower,meaning you can potentially be killed before you can even encore.Taunt has the same case,next to no defensive pokemon run taunt,so its mostly run by offensive pokemon or leads(Well these obviously are leads so arent there in the later part of game or have their sash already broken) and so it falls under the same issue of pokemon being comparitively frail so may die,just that one thing it has is it doesnt need the user to be slower so it can taunt and prevent the setup,but that doesnt mean it damaged the pokemon or its substitute.
Can only shed tail once or twice : When cyclizar was around it usually took 3-4 shed tails before the game ended and so some ppl who havent played since are under the expression that it took cyclizar 3-4 shed tails before game ended,this can only do it once or twice,whats the big deal?
Well the thing is what i mentioned previously,it has a
slow untouched substitute as opposed to cyclizar's substitute in which the receiving pokemon's substitute would take the damage often breaking it,here thats not the case,the receiver can basically get a guaranteed free turn and maybe more with tera potentially ending the game right there.
CONCLUSION:
A strat which is run in half the tournament games and high ladder games isnt a cheese strat,its a real strat.
This is an
extremely uncompetitive(I dont think I need to explain why a baton pass+substitute in one turn is uncompetitive) and
borderline broken move which is facilitated with extremely strong sweepers,booster energy and terastalization, It has run its time in the ou metagame and plagued the high ladder and tournaments enough that its time now it gets some immediate action taken on it,be it suspect or a quickban.If Suspect happens I would vote a
Ban on it.
@Council kindly address this with a suspect or qb as soon as you can and pls dont say cuz home soon no action