http://www.smogon.com/bw/pokemon/rotom-w
[SET]
Name: Expert Belt
Move 1: Volt Switch
Move 2: Hydro Pump
Move 3: Hidden Power Fire / Hidden Power Ice / Hidden Power Grass
Move 4: Thunderbolt / Signal Beam
Item: Expert Belt
Nature: Modest
EVs: 112 HP / 252 SpA / 144 Spe
Why this set deserves to be on-site:
- Easily able to bluff because almost all Rotom-w in BW OU generally have Choice Scarf.
- Can either KO or 2HKO most of its common counters with the exepction of Blissey.
- Not a very expected threat.
- No set similar to this on site.
Additional Comments:
- Gastrodon and Celebi are taken out by this set. Latios isn't KO'd by this set, neither is Hydreigon, but take a respectable amount of damage in process.
- Unfortunately, the only flat out KO you're going to get is Celebi and Signal Beam, unless Gastrodon is physically defensive.
- You do more damage to Jellicent, Politoed, Heatran, Tyranitar, and among others with the appropriate move.
- Unlike the Choice Specs set who can assure a decent amount of KOs, you can switch moves in this set and therefore eases pressure you'll receive.
- Hidden Power [Fire] can be used over its Grass variant for Ferrothorn and a quick KO on Scizor.
- EVs let you hit as hard as possible while outrunning Pokemon who has 244 to beat max speed Tyranitar while retaining bulk.
- Hidden Power Ice can be used for Dragonite who would otherwise not take much, but Volt Switching to a counter might be better.
- Because of lack of leftovers, Wish support is greatly appreciated.
- Pain Split is an option as well for same reason, but don't go around using early-game; it'll give away your surprise.
- Max speed is useful for Celebis who can potentially outspeed you.
- A spread of 36 HP / 252 SpA / 220 Spe is also viable; it lets you outspeed Positive Base 70s such as Politoed and Breloom and most likely OHKOing them. Be sure to use 224 SpA when using HP Fire, though.
Teammates & Counters:
- Pokemon who appreciate the aforementioned threats weakened or KO'd.
- Politoed brings rain and appreciates Celebi and Gastrodon removed so it can use Hydro Pump without much issue while a weakened Latios / Hydreigon is taken out by it.
- Starmie is in the same vain as Politoed except Starmie could take out an injured Latios anytime with Ice Beam or its water STAB.
- Also useful in Sand teams where Hidden Power Fire Celebi can be a huge threat.
- Latios and Hydreigon can still survive Signal Beam and retaliate.
- Blissey and Chansey are still threats.
- Grass types such as Ferrothorn is a huge issue.
- If you choose not to use Hidden Power Fire, Magnezone is a fantastic partner to this set as it'll trap Ferrothorns who is eager to wall Rotom-w