Slugma. No, seriously, ain't even kidding. I used it for beeding and just 'played' with it when I was bored. I was bored a lot. I eventually had 4 hearts with that thing. Got real attached to it I did, so I evolved it, EV trained it, gave it some great moves(Magcargo has an awesome movepool by the by), made it a permanent member of my team and watch it suck major balls in every battle it is in.
In hindsight I should have used that dumb bird for breeding so I now wouldn't be in love with a magma turd.
They're on our left, they're on our right, they're in front of us, and they're behind us. They can't get away this time!