>>23307783>Not poison/darkNigga, it gets Crunch _and_ dark Pulse. Literally no reason to not get a Dark-typing
Plus, even with the addition of Fairy, thanks to Poison resisting it (Praise be to Masuda), Poison/Dark w/Levitate has no weaknesses, 2 immunities, cant be poisoned, and is immune to Spikes/not weak to SR.
You wouldn't even need to
balloon the sp. Def that much due to the retarded bulk a Poison/Dark typing would give it. Cap SpDef at 90-100 and put the rest in offenses, preferrably special because that lets it use Flamethrower.