Ferroseed

Ferroseed might have an NFE status, but don't let that trick you into thinking it is a bad Pokemon. In fact, Ferroseed is one of the best pure support Pokemon in the tier. Sporting solid defenses thanks to Eviolite, a great defensive typing, and a wide support movepool, Ferroseed can be quite the pain to take down. Even its abysmal Speed can be turned into an advantage thanks to Ferroseed's access to Gyro Ball. Ferroseed isn't unbeatable though. With a 4x Fire weakness, a Fighting weakness, and Pokemon such as Entei, Gallade, and Moltres being extremely common in the tier, there are plenty of Pokemon that can simply turn Ferroseed into a liability. Ferroseed's low Attack stat also means that nothing outside of Gyro Ball is going to be hitting hard. Ferroseed's abundant support movepool also leads to a case of four-moveslot syndrome that keeps it from carrying every support move it would like to. Within its vast support movepool, Ferroseed is missing one key ingredient: a form of reliable recovery. This can cause Ferroseed to wear down over time as it doesn't even have Leftovers recovery due to the necessity of holding Eviolite to be the defensive stalwart that it is. Ferroseed is a great support Pokemon in RU, but you need to be sure to cover for its faults, mainly its lack of reliable recovery and weaknesses to Fire- and Fighting-type moves, if you want to get the most out of it.