First of all, happy June! It’s now the anniversary of my first post, so I guess that’s a cause for celebration? Here’s to another year of posting!
Smogon official tier: NU
Base Stats: 80 HP, 52 Atk, 50 Def, 90 Sp.Atk, 50 Sp.Def, 89 Speed
Abilities: Shield Dust, Compound Eyes, Friend Guard (HA)
Usable moves: Acrobatics, Aerial Ace, Aromatherapy, Bug Buzz, Calm Mind, Energy Ball, Façade, Frustration, Giga Drain, Hidden Power (Fire, Ice), Hurricane, Light Screen, Protect, Psychic, Quiver Dance, Rest, Return, Roost, Signal Beam, Sleep Powder, Substitute, Tailwind, Toxic, U-turn
Aside from being number 666 in the National Pokédex, Vivillon is notorious for having two threatening moves in Sleep Powder and Quiver Dance. Sure, Lilligant and Venomoth also gets access to this combination of moves, but what distinguishes Vivillon from those two is its access to two key components: Compound Eyes and Hurricane. Compound Eyes boosts the accuracy of its Sleep Powders and Hurricanes to 97% and 91%, respectively, making them much easier to hit with. Do keep in mind, however, that they still miss. (Remember that the 30% boost is multiplicative, not additive.) Meanwhile, Hurricane does ridiculous damage, even coming from a base Special Attack of 90, and its resistances are few and far between, especially in NU.
Unfortunately, Vivillon is set back by its extreme frailty (as expected of a first route bug) and its quad weakness to Stealth Rock, which make it difficult to switch in on anything but an Earthquake or a Close Combat. It also doesn’t have the best Speed tier or the best offense, so setup is pretty much required for it to wreak havoc on an opponent’s team. Finally, keep in mind that Sleep Clause is a thing, meaning that only one Pokémon on any team can be put to sleep at a time (this does not include self-induced sleep through Rest). Even still, don’t underestimate it, and be sure you have a way to handle it (and just Stealth Rock won’t suffice; any smart Vivillon player would bring hazard control).
Vivillon @ Focus Sash
Ability: Compound Eyes
EVs: 4 Def / 252 SpA / 252 Spe
IVs: 0 Atk
– Quiver Dance
– Sleep Powder
– Giga Drain
Usually, I would advise running 4 Special Defense instead, but the only NU-legal Download user is Porygon, the usage of which is basically limited to LC (and for a darn good reason). Thus, its extra 4 EVs are put into Defense in order to better withstand physical Fighting-type attacks. HP is left untouched because its HP value has to be odd in order for it to live two Stealth Rock switch-ins. Its other EVs are obviously into Special Attack and Speed because it’s an offensive Pokémon; Timid nature is to ensure that it is as fast as possible, speed tying with fellow Vivillon and outspeeding past base 76 (yep, that’s the difference between Timid and Modest); Attack IV is 0 to reduce incoming Foul Play damage. Ability choice is obvious because Shield Dust doesn’t help frail Pokémon much and Friend Guard is useless in singles. Focus Sash is used as a failsafe in case of a miss or a potential priority attack.
A Vivillon without Quiver Dance is a Vivillon of wasted potential (in singles, anyway). Sleep Powder is another one of Vivillon’s few claims to infamy, literally saying “good night” to any wall that tries to sit in its face with free rein. Hurricane is its best offensive move, boasting a destructive base 110 power and, with Compound Eyes, a decent 91% accuracy. Giga Drain is mainly there for most of the Rock-types that can eat up Hurricanes for days, to regain health lost due to residual or priority damage, and, to a lesser extent, to deal heavy damage to Quagsire (a 50% chance to OHKO P.Def variants, even better depending on hazards). It’s also helpful if you’re afraid to miss Hurricane.
Vivillon doesn’t have many other options, but it doesn’t really need many other options. Bug Buzz can be used as supplementary STAB and still hits most Rock-types pretty hard, just as well as Electric-types. If Vivillon is having problems with Bastiodon (but, you know, that’s what teammates are for), it can run Hidden Power Fighting or Ground, but don’t push your luck…
+1 252 SpA Vivillon Hidden Power Ground vs. 248 HP / 252+ SpD Bastiodon: 180-212 (55.7 – 65.6%) — guaranteed 2HKO after Leftovers recovery
http://pastebin.com/G57Ju1Ln – Only tested once, but hey, at least it won its first battle.