Originally Posted by Fat DestinyUnknown
This team looks pretty decent, but it has some problems (as you have noticed) with Volturn teams. Since Latias doesn't seem very necessary for this team, you could try to replace it with Celebi. Celebi can switch on Rotom-W and beat it with its Grass STAB moves while being able to kill Scizor (too) with Hidden Power Fire. It's able to provide Stealth Rock support, too. Here's the set:
Celebi@Leftovers | Natural Cure
Modest Nature | 232 HP / 240 SpA / 36 Spe
Leaf Storm / Hidden Power Fire / Recover / Stealth Rock
This seems to be a good one, although isn't Celebi weak to U-turn? Besides I've tried this Celebi on another team and I found that the special attack drop from Lead Storm is very annoying, so are Grass Knot/Energy Ball acceptable alternatives?
Another thing you might consider is running Stone Edge over Brick Break on Salamence, as your team looks a bit Gyarados and Volcarona weak, and that would allow you to beat them without having to lock Salamence on Outrage.
I do tend to prefer higher accuracies moves, but rock slide doesn't have enough power against Gyarados, does it? Otherwise I'll stick to Outrage + BB