So after experimenting with shuckle a bit i came up with this moveset. Let's just say that the guys at smogen have no idea what there doing.

http://pokemonshowdown.com/replay/ou-152279037

Shuckle @ Leftovers
Ability: Contrary
EVs: 252 HP / 4 Def / 252 SpD
Careful Nature
- Shell Smash
- Infestation
- Toxic
- Rest