
Rotom-Wash @ Leftovers
Ability: Levitate
EVs: 252 HP / 252 Def / 4 SpA
Bold Nature
- Will-O-Wisp
- Volt Switch
- Hydro Pump
- Pain Split
Role: Physical Wall/Pivot
What It Does: There are a lot of good sets for Rotom-W, but this is my favorite. This set is meant to make Rotom-W a full blown crippler of most physical attackers. It's a full blown counter to those powerful Flying types that are always around OU like Talonflame, Mega Pinsir, and Staraptor as it can take a couple hits, and then burn them and make them essentially useless for the rest of the match or take them out completely with Volt Switch or Hydro Pump. Also works against many common Pokemon, including the likes of Garchomp, Tyrantiar, Scizor, Landorus and some variants of Azumarill (Will O Wisp helps avoid a sweep from the Belly Drum set, but it still does a lot of damage). It is also a good pivot thanks to Volt Switch and thanks to Pain Split, won't miss its item too much if it gets hit with Knock Off, making it a good choice to switch in if Knock Off is predicted. Hydro Pump is really only there because it needs to be, and is usually the least used move in the set.
Good Teammates: A Pokemon that can take out the likes of Mega Venusaur like aforementioned Talonflame, Mega Pinsir, or Staraptor are all good teammates for Rotom-Wash. A special wall to soak up the special attacks that this set isn't built to take like Chansey could also be beneficial, as it can also throw a Toxic on special attackers, which will take them out a lot faster than a burn will. A Scarfed U-Turner is also beneficial as it helps to keep the momentum that Rotom-Wash could potentially set up with Volt Switch.
What Counters It: Mega Venusaur, Roserade and most other grass types are pretty good counters to this set of Rotom-W, as they are more specially oriented generally and have STAB that is super effective against it. The speedier versions of Exadrill, and other Pokemon with Mold Breaker Earthquake like Haxorus and Mega Gyarados also can beat Rotom-W before it can get off a Will O Wisp, especially later in the battle after it has been weakened a bit.
Any Additional Info: Probably the big thing that counters it is hax, as a missed Will-O-Wisp or Hydro Pump can turn the tide of the entire match against you.
First try, this is one of my favorite sets to use so I wanted to post.