I'm going to try at a Trick Room Sun Sweeper for Sunkern. For LC obviously, for trolling reasons :3
Sunkern (M) @ Life Orb

Trait: Solar Power
EVs: 196 SpAtk / 196 HP / 116 SpDef
Quiet Nature (+SpAtk, -Spd)
- Synthesis
- SolarBeam
- Sludge Bomb
- Hidden Power [Fire]
Why is there no Little Cup set for Sunkern already? Oh well. xD
This one is for use of Trick Room, in Sun. Synthesis heals you 100% in sunlight, and considering the bulk drop in Solar Power, helps with it's longevity. EVs allow it to hopefully take a hit and deal some damage back. SolarBeam is obvious STAB. Sludge Bomb is coverage, as well as screwing Bugs. Hidden Power Fire is coverage for Steel types who won't take Sludge Bomb. With Solar Power bumping up it's SpAtk and Trick Room hopefully making it move first, sun pellet might actually be of some use.