It's a bit gimmicky, but here's my set (direct export from PS with changes in bold):
Rotom-Mow @ Life Orb
EVs: 252 SAtk / 4 SDef / 252 Spd
- Pain Split
- Leaf Storm/HP Grass
- Thunder Wave/Will-O-Wisp/Volt Switch/HP Flavor of the Month
Basically, you use Pain Split to heal off the LO damage. I use LStorm because it murders things with 1.3 damage, but HP Grass is acceptable. Not really much to it.