Actually, yes. Particularly thundurus, but I'll probably support a Landorus ban as well. The rest I don't see as broken, but I'll refrain from making definitive statements until suspect tests for them occur.
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Kairyu_Gen1
Aragorn the King
Do you play offense mostly? I'm kinda surprised actually, as I think thundurus is one of the ones that definitely shouldn't go. I usually play bulky offense, so thundurus isn't that scary, while lando is.