Giratina -O with Shadow Sneak if you don't have 2 Ubers.
If your only fear is Kyogre, you can use Shedinja.
Shiftry gets Grass Knot, Explosion, Quick Attack, Sucker Punch, Leaf Storm, Fake Out, Dark Pulse, Extransatory, Nasty Plot, Energy Ball, SD, Rock Slide, Razor Leaf (to some extent), Seed Bomb and Low Kick.
Abomasnow gets Ice Shard and can hurt Kyogre w/ Wood Hammer or Grass Knot.
You also get Infernape who gets Mach Punch, Vaccume Wave, Flare Blitz, Fire Punch, Fake Out, Encore, Grass Knot, Thunder Punch, Flame thrower, Fire Blast, Solar Beam, Close Combat, Taunt, Feint, Helping Hand, Low Kick, and Heat Wave.
What's the best nature/moveset for a cresselia in VGC?
edit: I messed up big time. My cresselia has been running around...and I didn't know once it's roaming it stays the same nature. So I'm stuck with an adamant Cresselia. Is she useless?
Cresselia - #488 (Adamant)
HP: 26 - 27
Att: 30 - 31
Def: 24 - 25
SpA: 0 - 3
SpD: 8 - 9
Speed: 20 - 21
Most Cresselia are supporters, and use moves like TR, Helping Hand, Protect, Screens, Thunder Wave, Lunar Dance, ect...
The one you picked up could be used as a physical attacker. I don't mean a sweeper, but a Cress who isn't crippled my Taunt Mewtwo.
BTW, does anyone think Feint will have any use in VGC this year considering all the Protect, Selfdestruct, and Explosion users? Feint on Sableye would be awesome (immunity to Explosion), breaking Protect and guaranteeing Explosion a hit (although, Sableye shouldn't be taken any father than UU because of his stats...).