Politoed

The notorious frog has returned for another year of VGC, yet is far from the dominant amphibian it was last generation. The poor guy lost its permanent rain from Black and White, and as such its main niche has been vastly reduced in size. However, in VGC where the games are so short, Politoed is still a very viable Pokemon regardless, with or without Damp Rock. In addition, although Politoed is comparatively frail, it still takes a strong super effective hit to take the critter down in one go. Politoed also has access to some great support moves such as Encore and Perish Song, although it lost Icy Wind and Helping Hand in this year's format. Politoed is capable of running a few different sets such as Choice Scarf and support, but most importantly, all of them still have its precious Drizzle, which is a colossal help to possible partners such as Kingdra and Ludicolo. Finally, Politoed's rain obviously ends Mega Charizard Y's sun and Tyranitar'ssand, which can really mess up an opponent that relies on them. In summary, while Politoed has indeed been nerfed since VGC 2013, it is still a viable Pokemon with some neat roles, and its effectiveness should not be underestimated.