Can be abrasive at times (no joke)
While it looks interesting, the replay doesn't really do much in justifying the massive rank jump. While FU is for sure lacking Steel-types, Lairon and Metang are VERY common, and wall the living hell out of Swirlix, which only makes it that much more difficult to sweep. On top of that, unlike Linoone, arguably the only Drummer worth using in FU, it's not nearly as prone to being bopped by Choice Scarf users as well as other forms of priority such as Dodrio's and Flareon's CB Quick Attack, Cate's Sucker Punch, and Murkrow's priority Thunder Wave because ExtremeSpeed is the fastest form of priority bar Fake Out. Linoone also has coverage options such as Shadow Claw to heavily dent Metang, as well as Dusclops. Even Rock Smash is a viable option, as it is able to 2HKO Lairon and OHKO them with hazard support. However for Linoone to succeed it needs a lot of support; Memento support is practically obligatory and Dual Screens/Diglett are both nice too. The biggest factor that separates the two IMO is Swirlix's reliability on Unburden, while Linoone is ALWAYS going to be able to outspeed the entire tier because of E-Speed, meaning that once it gets off a Drum, the only thing it has to worry about is not OHKOing something. Swirlix still has to worry about revenge killers as well as its item activating too early.Nominating Swirlix from Unranked ---> B/B+
Swirlix @ Sitrus Berry
EVs: 4 HP / 252 Atk / 252 Spe
- Belly Drum
- Play Rough
So this thing is actually a very devastating threat in the FU metagame. After a +6 boost it cleanly ohkos every offensive threat in the metagame, and 2hkos all walls in the tier such as Clefairy and Dusclops. After the unburden boost it hits a speedy 394 speed stat. The fairy typing also keeps Fraxure from spamming it's main STAB in outrage, due to Swirlix getting a free belly drum off it. I have found this works best with Memento support, but it's worth the support. This thing can clean late game without any issues once you drop a memento. The only issue are the 3 steel types in FU that give this trouble, but after they have been weakened slurpuff can still clean late game. Protect is also used to dodge Persians Fake Out.
Heres a replay I had to show it off in action - http://replay.pokemonshowdown.com/pu-235015326
Swirlix seems like an interesting sweeper, but I just really can't see it being used over Linoone who has a far superior sweeping move which limits what can revenge kill it as well as its significantly higher Attack stat, which keeps it from being a 100% liability before a Drum unlike Swirlix, as well as being able to muscle through more shit. Anything higher than C rank just seems a way too outrageous. The only major advantage Swirlix has is its Fairy-typing, but that's still not enough to put it in the same rank as Linoone, or anything close to it for that matter.