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No, seriously. Besides abusing the immunities to his attacks (aka predicting), what do you use against him? i dont think anything likes to switch in. Slowking is suscetible to CM sets, Clefable is 2HKOed, so it relies on a miss of focus miss, which, no matter what you say, isnt likely to happen.
Munchlax is the only mon that can switch in with relative easy (nostalgia, anyone), but now we got a 100% counter for it (taunt sableye).