If you're running will-o-wisp efficiently, or have other pokemon running will-o-wisp/boiling water, you may want to consider evil eye over shadow ball, although it works better in conjunction with a phazer and entry hazards. Extra 20 base power. but a bit situational. Worth thinking about?Burunkeru @ Leftovers
Nature: Bold
EVs: 252 HP / 252 Def / 4 SpA
Final Stats: 404 / x / 262 / 207 / 246 / 156
Recover
Will-O-Wisp
Surf
Shadow Ball / Toxic
It doesn't apply to celetran. Celetran is not weak to an unresisted offensive combination.
I'm actually considering running Magic Mirror CM Espeon just due to these two and Erefuun. Although at present it's just theorymon, Espeon is pretty much invulnerable to Erefuun, and can easily set up on any of the three. If I'm not mistaken, it also gets immunity to taunt and encore, as well as no status (obviously). It just needs to be careful for Burungeru's attacks before it takes it out with a boosted shadow ball, from what I can see.
He doesn't particuarly enjoy being Seeded though, and if you predict wrong they can play around Roobpushin since Burungeru is Fighting immune and Nattorei resists Dark, as well having Steel Thorns. Between Steel Thorns, Leech Seed and potentially Burn (Or worse; Toxic) one could outstall Roobpushin pretty easily. Although he is a pretty decent answer to it since if you outpredict them you can do some serious damage at least. Bulk-Up Roobpushin particuarly is pretty dangerous since he can set up on either one and the only things he really has to worry about are Leech Seed and Toxic, which can always be prevented by Substitute should you just run 2 attacks or a SubPunch set which also threatens the Buruttorei pretty well.
The problem with using Roopushin as a counter to either one is that you have a 50% chance that your attack will be severely weakened (i.e. They either switch or stay, and you'll use either Payback or Mach Punch).
Breloom also does fairly well against it.
All the more reason to use Scarf Shandera. He can switch in on Roobushin's Fighting- attacks and kill it off with STAB Fire Blast or Psychic. The same goes for Breloom, as you can switch-in on his Mach Punches and kill him off.
I have no idea why you would stay in against a Shanderaa with either of the two, unless they switched into a Payback >.>
You could say that about any Scarfed Pokemon, really. And of course there is Shadow Tag.
Which doesn't even exist right now. I honestly don't get why people say "LOL CB sucks cuz Shanderaa". It's not released and we don't know if it ever will be :/