Get ready for
OWNAGE!
Castform @ Wise Glasses
Sunny Day
Weather Ball
Solarbeam
Shadow Ball/Thief/Substitute/Disable/Toxic
Nature-Modest
Ability-Forecast
252 Sp.Atk, 126 Def, 126 Sp.Def, 4 HP
A Castform set made for lulz. Sunny Day for 100 Base Power (and Fire Type) Weather Balls and no-charge Solarbeams. The last moveslot could be used for a variety of effects. Shadow Ball for a main Special Sweeper set, Thief for item stealing, Substitute offers a nice option if you can set it up correctly, Disable can also be helpful if you are fairly good at prediction and wish to render on of your opponent's attacks useless, and Toxic for crazy people.
Since Castform has 70 in all base stats, feel free to mess around with his EV's/IV's to your tastes, I only put what I would normally go for with this set.
Castform would be a nice addition to a weather team =D If he were on a weather team, I might recommend giving him a Heat Rock if you wish to lead into another pokemon.
And now..........
PART 2!
THAT'S RIGHT, (Emo-Shiny)CHERRIM! (@ Quick Claw)
Leech Seed
Helping Hand
Aromatherapy
Safeguard/Toxic/Lucky Chant/Substitute/Solarbeam
Nature-Timid
Ability-Flower Gift
252 Speed, 256 among HP/Def/Sp.Def (However you choose)
I would
definitely recommend Cherrim as a partner to the aforementioned Castform if you are in a double battle. Cherrim's speed is actually decent for UU, and it is only 2 points under his highest stat, Special Attack. Leech Seed could be used to ensure HP gain and to drain your opponent, Helping Hand to boost Castform's attacks (which are
already boosted because of Flower Gift), Aromatherapy to heal any status conditions you may have in your party, and the last moveslot is customisable like Castform's. You might want to choose attacks in the last slots of Castform and Cherrim that you think work effectively together
The Solarbeam option is only if you really fear being taunted or if you want to take a small advantage of Cherrim's Special Attack stat.
Quick Claw was honestly just the first item that popped up in my head while I was making this, but if you find an alternative item that you believe works better or enhances the Cast-Cherrim combo, then go ahead and use it ^^