Combusken @ Red Card
Ability: Speed Boost
EVs: 252 Speed/ 252 Attack/ 4 HP
Adamant Nature (+A -SpA)
I just started in the NU tier and this set works very well. You are most likely thinking, WTF is a red card? Red Card is an item that switches out the opponent's pokemon when attacked, similarly to the move roar. 252 Speed EVs allow you to outspeed alot, so use substitute when combusken is first sent out. If you are attacked, watch as the opponent struggles to counter your genius strategy. If you aren't attacked, use swords dance and start your sweeping. Good at predicting what the opponent will do next? Then this set is for you.