Actually, I have hit a bit of a snag. Roserade doesn't learn any decent Poison-type moves without a TM, and Sludge Bomb is only available after the Laverre gym, which is what I need it for. I'm going to try to use a Toxic Spikes/Venoshock strategy, but I don't know how well that will work.
Edit: Also, is there a repeatable source of Leftovers? Snorlax now holds Sitrus Berries instead, unless you changed that. I checked the document, though, and it doesn't list Leftovers anywhere.
Leftovers are held by wild Munchlax 100% of the time. You can find them on the same route the Snorlax event was on (Route 5? I forget the number, but it's the one by the daycare. Pretty sure they're in the purple grass.)
Edit 2: The Team Flare double battle with Calem in the Pokeball factory is satan. Their team seems specifically tailored to destroy Calem, and their leads are both easily capable of knocking out his Meowstic right from the start.
I can usually get to the last part, but since they wreck Calem, it's two on one, with a Mega Pinsir and Hydreigon, both very healthy, that my last Pokemon has to deal with alone, while they both have great coverage moves.
I think it mostly stems from the fact that my ally's AI is completely brain-dead, and I have to rely on him to help me. But he really can't help me.
Yeah, I wanted to make some of the Team Flare boss battles a little more memorable, so those two wound up being a pretty significant difficulty spike. Calem's Meowstic is just supposed to set up a screen or two and faint, and the rest of his team is pretty mediocre at that point. I probably should have changed some text and given him mega evolution at that point so he was a little more helpful.
Edit 3: Beat them, finally. Calem's Clefable got burned so it couldn't be statused and set up a ton of Cosmic Powers to keep tanking everything, and we beat the entire right side, so Chandelure got crippled all alone and Clefable couldn't KO it, so my Sliggoo could revive a part of my team, easilly tanking Chandelure's hits with its colossal SpD for a middle stage.
Also, for the Laverre gym, it was difficult, but the Toxic Spikes/Venoshock strategy won out in the end.
Glad you got through it! Targeting one side is definitely the best way to approach those multi battles, once you get the battle down to a two on one it's much more manageable. What's your team at this point? It sounds interesting.