Oshawott

Oshawott finds its niche as the only Water-type special attacker with access to non-STAB Air Slash, which allows it to lure in and remove Croagunk without having to run Hidden Power. Oshawott really does have some power behind it; its Hydro Pump 2HKOes Porygon, and it hits the same benchmarks as special Carvanha. Unfortunately, Oshawott is slow. An overreliance on Life Orb means Oshawott lacks bulk for the most part; if it does not OHKO or 2HKO its switch-ins, it will likely be either severely crippled or forced to switch out. It also struggles to take on users of strong priority attacks, such as Pawniard and Fletchling. Additionally, Oshawott has to compete with almost every other Water-type attacker, such as the aforementioned Carvanha, many of which are better in every aspect outside of Croagunk luring.