Clefable

The combination of Clefable's decent bulk, a good defensive typing in Fairy that leaves it only weak to Steel and Poison, its abilities, and its movepool makes it incredibly versatile and able to fulfill a lot of different roles on the team. Clefable is great at compressing many roles due to its vast movepool and good bulk backed by two great abilities. Its primary roles on the team can be to check Scizor, get entry hazards up, and be a wincon in a lot of match-ups. Its two primary abilities are Magic Guard and Unaware. Magic Guard is very nice for absorbing moves like Toxic, Will-O-Wisp, and Leech Seed, coming in on hazards without taking any damage, and even negating Life Orb recoil to let Clefable be used as an offensive tank. Unaware on the other hand lets it check setup sweepers such as Mega Gyarados and Mega Scizor and stop them from sweeping your team. Additionally, Clefable's wide movepool gives it many options. It has access to Stealth Rock, which not many other Fairy-type Pokemon do. It can be a cleric with access to Wish and Heal Bell, it has nice utility options in Encore, Knock Off, and Thunder Wave, it has very solid coverage in Thunderbolt, Ice Beam, Flamethrower, and Moonblast, and Calm Mind can turn it into a very dangerous setup sweeper that's not easy to deal with. It's one of the few Pokemon on Fairy that are able to survive an unboosted Bullet Punch from Mega Scizor and have access to Fire-type moves in Flamethrower and Fire Blast, and that makes it a very important asset to Fairy.