This guy is one of the worst Pokemon I have ever seen. I think LC is too difficult for this guy, but unfortunately, it has to be in NU, where it stands very little chance. He doesn't have good attacking moves, not that it matters with his stats. Use him to annoy the foe as much as possible. Or better yet, don't use him.
EVs: Attack, Defense, Sp Def Nature: Adamant
Spikes: Set up entry hazards, it is about the only thing this guy can do.
Toxic Spikes: More entry hazards. If you can survive long enough.
Knock Down: Annoy the hell out of Pokemon who have Ground immunity.
Explosion: Any moment this guy is going to fall to your opponent, so why not take him with you on your own terms?