Now, here's my Rain Volcarona set:
Volcarona @ Focus Sash
EVs: 252 SpA / 4 SpD / 252 Spe
-Hidden Power Water
Now, if I'm down to my Sash, Bug Buzz gets a power boost. However, if something like Mega Metagross revenge kills me with Bullet Punch, there's a chance to burn it, hugely crippling it. I've run Flame Body and it's been quite helpful, but I haven't even tried Swarm. Can anyone help? I can post the rest of my team in a comment if necessary.