Thanks to Serebii and Nuggetbridge for notification.
http://ja.pokemon-gl.com/about/sp/ec2012/
Japan will soon receive the Eevee Cup, a tournament that differs heavily from what we've seen from official tournaments before. The tournament is played in rotation matches, making it the first rotation tournament Nintendo's ever given us. Additionally, only 8 Pokemon are allowed: Eevee and its Evolutions.
This thread will serve as a place to talk about the tournament, whether it be about the tournament and its rules, discussion once its on going, or some speculation as to what might be good.
----------
To kick things off, here are some general notes:
Vaporeon
Jolteon
Flareon
Espeon
Umbreon
Leafeon
Glaceon
Eevee
Though this might not ever come to america, it's definitely something fun to speculate about. Be sure all of you with Japanese Cartridges get in on the action!
Also, for participating, you get one of these eevee dollls
goddamn, those things are adorable.
http://ja.pokemon-gl.com/about/sp/ec2012/

Japan will soon receive the Eevee Cup, a tournament that differs heavily from what we've seen from official tournaments before. The tournament is played in rotation matches, making it the first rotation tournament Nintendo's ever given us. Additionally, only 8 Pokemon are allowed: Eevee and its Evolutions.
This thread will serve as a place to talk about the tournament, whether it be about the tournament and its rules, discussion once its on going, or some speculation as to what might be good.
----------
To kick things off, here are some general notes:

Vaporeon
- Vaporeon passes the biggest Wishes in the rule set. Considering how cool Wish is in rotation matches, that's pretty stellar
- Water + Bug hits everything in the rule set for neutral damage. You should consider running Signal Beam instead of Ice Beam since Ice Beams only good for Leafeon
- Vaporeon can abuse Rain very well thanks to its powerful STAB attacks and Hydration. Consider maybe running a rain set with Jolteon?
- Water Absorb and Hydration are both useful abilities.

Jolteon
- Fastest of the Eeveelutions and still packs a punch.
- Can afford to run a Modest nature instead of Timid if you don't care about speed tieing with enemy Jolteons
- Electric + Bug hits everything in rule set for neutral damage, additionally hitting 4 of the 8 Pokemon for super effective damage.
- Pretty stellar rain abuser alongside Vaporeon and Umbreon who can set it up reliably. Thunder hurts.
- Enemy Volt Absorb Jolteons might be a big enough threat to merit Hidden Power Ground.
- Volt Absorb is probably the best choice of ability since Electric attacks look common and status does not.

Flareon
- Don't count Flareon out immediately
- High Special Defense in a rule set filled with Special Attackers is cool
- Fire + Normal offers perfect coverage
- Hits the three Pokemon with the largest defense stats for Super Effective damage between STAB and Superpower.
- Flash Fire is useful if you run into an enemy flareon, but Guts seems like a better choice. Guts boosted attacks in a rule set with pretty frail defense hurt.

Espeon
- Highest Special Attack, tied with Glaceon
- Psychic + Bug grants you perfect coverage as only Espeon and Umbreon get in your way.
- Boosting moves are pretty cool in doubles, Calm Mind set looks really deadly, especially when paired with wish support from Umbreon or Vaporeon.
- Frail, but Calm Mind compensates for it
- Magic Bounce isn't as useful thanks to the lack of entry hazards. It could even prove to be troublesome if you end up reflecting a random Thunder Wave from Jolteon or a Will o Wisp from Flareon.

Umbreon
- Phenominal tank
- Takes neutral damage from every eeveelution's STAB beyond Espeon's
- Singal Beam looks to be pretty common
- Fantastic wish passer and weather enducer
- Curse + Payback looks like it's going to hurt, only enemy Umbreon resist it.
- Both abilities suck pretty badly. There are hardly any flinching moves, so Synchronize looks to be the best.

Leafeon
- Grass + Normal hits everything for neutral damage, Leaf Blade and Double Edge hurt.
- strong physical defense isn't the most helpful when you're going against so many physical attackers.
- Swords dance looks pretty scary, only outsped by Jolteon and Espeon
- Chlorophyll makes this thing scary to fight in the sun.

Glaceon
- Fantastic Special Attack
- Ice STAB actually isn't that good, 3 of the 8 allowed resist it.
- Hyper Voice won't break through Vaporeon or Flareon any time soon, but you can at least hit them for strong neutral damage
- Ability really doesn't matter thanks to manual hail being so terrible.

Eevee
- Eevee is probably just a joke, but it might be worth looking at Adaptability Last Resorts
- Nothing in this rule set resists Normal!
- Eep Edit: Don't forget Eeveeolite!
Though this might not ever come to america, it's definitely something fun to speculate about. Be sure all of you with Japanese Cartridges get in on the action!
Also, for participating, you get one of these eevee dollls

goddamn, those things are adorable.