I'm not completely convinced that Darkrai is the only problem with sleep, but it is the biggest. This shouldn't be ruled out until we have some testing after Darkrai is banned. I always hear people saying sleep got nerfed because it is 3 turns max. Honestly, I would rather have a 4-5 turn sleep and not have it reset every time you switch out. It is quite an annoying trap that you can't completely pin on Darkrai. Take Breloom for example, you take the Spore and you switch out. That Pokemon is essentially useless for the entire game unless it is something the opponent can't touch the whole game, which is hard to have happen with all the threats this generation.






















