Corphish

Corphish is an offensive threat to watch out for. With its good typing, high Attack, and access to a great boosting move in Dragon Dance, it is a potent sweeper. Corphish's newly acquired Dream World ability, Adaptability, increases its STAB multiplier from the normal 1.5 to 2, and gives Corphish the strongest physical Water-type attack in the form of Crabhammer. After the Adaptability boost, Crabhammer has a Base Power equal to that of Hydro Pump, a truly astonishing fact. Although Corphish does not have the greatest Speed, it reaches an acceptable Speed stat of 14, which is a major jump point for any Speed-booster. Overall, Corphish is a great sweeper with its many unique qualities.