Crawdaunt

Crawdaunt was never a very good Pokemon in past generations. It had strong STABs and a high base Attack, but its pathetic base 55 Speed stat kept it from doing pretty much anything useful. However, its first ray of light came when it obtained Dragon Dance as an HGSS Egg move. This allowed Crawdaunt to finally raise its Speed and possibly even attempt a sweep. Although the power of the metagame around it has risen dramatically, Crawdaunt has only improved in the shift to BW. It received the Adaptability ability from the Dream World, raising its STAB modifier from 1.5x to 2x. Combined with the excellent coverage of Water- and Dark-type STABs, Crawdaunt now has the raw power to smash through many teams in UU after a Dragon Dance. Although Feraligatr might seem to outclass Crawdaunt in a sweeping role, Crawdaunt boasts a secondary Dark-type STAB to dispose of walls. However, Crawdaunt still has its fair share of problems on the defensive side. Its paper-thin defenses mean that priority moves spell trouble for our dancing lobster friend, especially considering that Crawdaunt's secondary Dark typing give it a weakness to Mach Punch and Vacuum Wave. In addition, even after a Dragon Dance, Crawdaunt can be revenge killed by fast Pokemon thanks to its abysmal Speed. Overall, if you need a sweeper for a UU team, it's always worth giving Crawdaunt a look.