I just started playing this on Pokemon Online the other day (thanks to an introduction from Hooker Punch), and I've got to say, this is an exciting experience. It's fun to have a smaller pool of Pokemon to choose from, yet still see some of the most common tactics emulated through it. I doubt I'll be playing much of this once NU settles down, but until then at least, I'll be loving the scene with the Golbats and the Roselia.
Speaking of, just how viable is Wartortle? As the only Rapid Spinner in the tier, there isn't really any question that it could hold a spot on a team, but conversely, the only Spiker is Roselia.
252 Sp. Attack Wartortle's Ice Beam vs. 4/0 Roselia: 66.7% - 79.4%
252 Sp. Attack Roselia's Energy Ball vs. 4/0 Wartortle: 102.2% - 121.5%
This means Roselia can basically shrug off the only Spinner in the tier. Assuming that you send something like Monferno in, Roselia still gets a layer of Spikes in now, and with the lack of STABed Pursuit, Roselia can switch in and out without fear of being stopped.
Seeing Roselia used as a lead makes me sad. Why would you use it so, when you could also run a much better set, such as;
Roselia (M) @ Leftovers
Trait: Natural Cure
EVs: 252 HP / 252 Spd / 4 SAtk
Timid Nature (+Spd, -Atk)
- Spikes
- Toxic Spikes
- Energy Ball
- Rest
This is my bulky set, that I pull out if it seems like I'm up against a stallish team. With just one layer of spikes, many setups are set back, and with two, any team without a grounded poison or Chansey is set to work. Energy Ball is the basic STAB attack, and while it doesn't OHKO Wartortle without a layer or two of Spikes, Roselia will outspeed anyway for the 2HKO. Rest is the big ticket to this set, however; with Natural Cure, it means Roselia can usually escape with its life, and come back to haunt again later (preferably when Marshtomp swaggers in).
The only problem, funnily enough, is that Roselia is a grass type. That means that it takes a spot away from other useful mons like Grotle, who could help immensely with the problem of Rhydon.
On a different note, Electabuzz is such a beast. It takes a bulky Pokemon to stop it, and it can't be weak to Fighting (Magneton, Chansey), Psychic (Roselia, Haunter), Electric (Golbat, water types) and whatever the last move is, which is commonly Hidden Power from my experience. The best chance is with something like Monferno, who can Fake Out and Mach Punch to deal a lot of damage.
I've seen relatively few Rhydon, and thus the only thing I usually do is send out Magneton on a predicted Stone Edge and Magnet Rise before 2HKOing. Of course, if it predicts and Stone Edges me anyway on the Magnet Rise, then I'm screwed. And if it Rock Polishes on the switch, I'm still screwed. I haven't had much problem with it, though.