Whimsicott

Despite its poor reputation, Whimsicott still has a notable niche in RU. With Prankster and a seemingly endless list of good support moves including Stun Spore, Taunt, Encore, Memento, and Tailwind, Whimsicott can provide support for a variety of teams; this includes, and is not limited to: spreading status through Stun Spore and Toxic, using Taunt to prevent the foe from setting up, and providing Sunny Day support for a sun team. However, due to its lackluster offensive stats, Whimsicott is limited to a supporting role. Moreover, Whimsicott's bulk is also mediocre, and its lack of a reliable recovery move is a major disappointment. Finally, after Whimsicott performs its job, it will usually become dead weight, as it poses no threat offensively and has no way outside of Leftovers and Leech Seed—which is blocked by opposing Grass-types—to recover its health. Whimsicott has a good Grass typing, but it faces competition from other Grass-types such as Tangrowth and Sceptile. Nevertheless, if you're looking for a Grass-type pivot that can prevent the foe from setting up, spread paralysis, and scout the opposing team, Whimsicott will have no trouble filling that role.