IT. IS. TIME.
Electric / Grass
HP: 50 / Atk: 60 / Def: 107 / SpA: 105 / SpD: 107 / Spe: 86
Rotom-Mow @ Choice Scarf
EVs: 252 SAtk / 252 Spd / 4 SDef
- Leaf Storm
- Volt Switch
Other Rain Abuser
Sure, Rotom-C makes a great Rain summoner, as you saw in my last contribution. However, Rotom-C is also an excellent Choice Scarf user, as many know. It is even bettered by the Rain, due to Thunder's now 100% accuracy and it's now neutrality to fire. Leaf Storm is still it's most powerful move, and it gets good coverage in RU, hitting most threats like Nidoqueen or Kabutops. The SpA drops are not that bad, as Rotom-C is mostly hit-and-run. Thunder makes a solid secondary STAB, as it gains the crucial coverage on Moltres, one of the scariest threats in RU. Also, it works if Rotom will stay in for long periods of time, as it does not have the SpA drops of Leaf Storm. However, it becomes unreliable once rain wears out, as 70% is not too good. Volt Switch works very well for hit-and-run, as it also provides a 100% accurate STAB move when it is not raining. Trick is the last move, as it works for crippling walls like Roselia and Ferroseed, which otherwise wall rain teams to oblivion. Them holding Scarves certainly makes them much less scary.
Rotom-C cannot touch many things, such as opposing Rotom-Cs, with it's dual STABs. In fact, all Grass types easily wall Rotom-C, as without HP Fire, it cannot do Squat. Druddigon is also an abysmal matchup, as a paralyzed Rotom-C is not something you want and Druddigon resists anything Rotom-C will throw at it. Special walls like Cresselia can successfully wall it, but none of them particularily enjoy a Trick.
Thunderbolt is an option over Thunder, but it has less power and misses some KOs. Hidden Power Fire can hit Grass types, but that is generally a bad idea in Rain. Will-O-Wisp can also work, but then you'd have to ditch one of Rotom's key attacking options. So, stick to the above set.
Sorry for short post, but what else can you say about Scarf Rotom-C that hasn't already been said? Also, I just wrote about it not that long ago, so I kinda ran out of things to say.