Vikavolt @ Focus Sash
EVs: 4 Def / 252 SpA / 252 Spe
IVs: 0 Atk
- Bug Buzz
- Thunder / Thunderbolt
- Flash Cannon
You know the drill. Dual STAB plus Flash Cannon is excellent coverage, the rest is simple. Not awful Speed if used in NU.
EDIT: I cannot think of an instance in which you need all 252 EV's in Speed to outspeed any certain Pokemon at +2. That being said, you can take out some slow threats who are deficient in Sp.Def with 203 Speed using the above EVs, without Agility.
So, if you would rather not invest all 252 in Speed, an alternate set I thought of would be:
EVs: 20 Def / 252 SpA / 236 Speed.
Unboosted, this has a total of 199 Speed. This, at +2, should be enough to outdo Jolly/Timid Choice Scarfed or +1 Pokemon up to base 71 Speed. That sounds alright in NU, right? Plus, those Defense EVs will come in more handy than you think on neutral hits.