>>15189800Hey, I posted this. I forgot to mention a few things.
As for nature, it's up to you. If you want more defense (which is understandable on Goodra), go Bold. If you want more special defense to boost its already ungodly 150 base, go Calm.
Remember that pure Dragon-type isn't as bad as people think. Yes, it's weak to Ice-, Dragon- and Fairy-type moves. But it has 4 very nice resistances in Fire, Water, Electric and Grass.
And don't forget that Infestation traps your opponent. It wears off if you switch Goodra out I believe, but that still lets your switch out without your opponent being able to.