DiamondClass
Banned
Even still, Whimsicott is pretty annoying to see on team preview. priority Tailwind, Taunt, and Encore wrecks a lot of pokemon. actually, any pokemon with Prankster screws people over.
I have this same problem, but not just WHimsicott, a Jumpluff can be just as annoying if your team isn't prepared. It can keep subbing and using leech seed.