Ok, I suggest that you use Blaziken.
Blaziken is very powerful. He was so powerful in competitive play that he was sent to the highest tier, ubers. That is the tier with Mewtwo and Zekrom. He has access to good moves, too. Here is the set I reccomend:
Item: expert belt
Recommended EV's: 252 att/ 252 spe/ 4 hp
High Jump Kick
Rock Slide/ Stone Edge
With this set, first, you use swords dance to make you stronger, and then you sweep the opponent's team.
Hope this helps :)