Not only have i never seen cottonee, but ive tried it out myself and lack of lefties and u-turn really hurts its viability. You see, the only good whimsicott set is stun spore/leech seed or GG drain/u-turn/taunt or encore. without u-turn cottonee cant do what whimsicott was born to do, gain momentum like a madman. Im sorry cottonee, but i dont think your viable =/.
(also tentacool should have been asked about first)
16:46 <TLCNU> Esca literally is 2HKO'd by Stoutland Fire Fang
10:33 skylight molk put me in your sig