For me I found the easiest combo was on rotation battles, start with Starmie off the bat up front, with DW Breloom and any dragon type. (ES Dnite, a good Haxorus, Zewilous, and Garchomp have worked well) and then my secret weapon is a Froslass with sash so it can survive 1 hit and still rock some serious damage. I mean, it's not the greatest or most strategic team, but it did the job really well for me. >_> I mean, any good team of ED trained pokemon with good move pools should work. The better the IVs the better as well of course. :P Dunno if this helped or not, but it's a decent choice for a team. Sometimes I switch Froslass with Chandelure. He works really well too, and ads fire to the team seing as starmie already has tbolt and ice beam.
Black 2 FC : 4599 7888 9156 name: Janelle Dex Filler, DWF Breeder, Trade Evolver, and Transfer Helper (Including gen 4-5) in Foveroula & Acids PAWN SHOP :D