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Don't let your memes be dreams
Some of the most antimeta mons currently?
Nothing has really changed to this list.Cobalion with Sub (SubToxic, SubSD with Shuca etc.), Mew, Gyara, Whimsicott, Togekiss, Mamoswine, Kyurem, Encore PuP MLop, SD Lando-T (can be SubSD, double dance, SD Smack Down + rocks)
I felt Whimsicott was nice when I made the post but I think the main reason it worked well was because it had a lot of support. It's not as anti-meta on an usual team. On the other hand, I used Crawdaunt with decent success in the past few days so that might also be worth a try. Definitely use Jolly.