Imposter doesn't copy Unburden. When you eat the Sitrus Berry, you have doubled Speed, but because Chansey has not consumed an item, Chansey does not have double Speed. Power Trip is 140 Base Power after Belly Drum, and at +6 Attack a super-effective hit can OHKO even Chansey with minimal Defense EV investment. Most setup including your own Iron Defense/Amnesia sets are weak to Prankster to begin with as 90% of Prankster users run Haze which is completely unblockable. Topsy-Turvy is frankly mediocre due to it's susceptibility to Magic Bounce and Prankster Topsy-Turvy can be blocked by Dark-types.i was wondering when someone is gonna come up with a belly drum set, sice i have never actually seen this in battle, but it looses to imposter even more, and is also weak to haze a lot, since dusk mane dosen't have prankster immunity, the set would just be crashed by giratina. (maybe EQ one-hits imposter blissey, i' not sure, but blisseys EQ straight up KOs
Also, I'm pretty sure Giratina gets absolutely destroyed by Power Trip, I don't remember the Icicle Crash damage calc but I think that OHKOes too. Any setup set loses to Prankster Giratina and BellyBurden Dusk Mane is not an exception. That's why BellyBurden Dusk Mane is only good in late game. You should wait to scout what abilities your opponent's Pokemon have. Your own Imposter can help make this easier if you choose to use that. Simply put, I don't think it's anything less than an unplay to set up with Dusk Mane before you are fully certain whether your opponent has a Prankster or not. Even I'll admit I'm somewhat guilty of this.
I personally don't like the idea of Baton Passing with Contrary Pokemon. It sounds good in theory but in practice it makes Imposter VERY threatening. Should Imposter come in on you and lose the Speed tie on Baton Passing, you automatically lose momentum and risk getting counterswept.Mewtwo-Mega-X @ Safety Goggles
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe
- Ice Hammer
- Baton Pass
Power Trip and Stored Power mons are one of the reasons why I get very nervous about this kind of set. You can opt to run Prankster on Giratina (Strength Sap is standard on Prankster anyways), but you don't hard counter Mega Mewtwo X any more. Still, I would personally run a Prankster mon, maybe with a second setup sweeper, to help deal with Power Trip and Stored Power Pokemon.BP on the MMX makes you slightly more susceptible to being beaten by your own strategy from Imposter, but I've found that most teams aren't properly equipped with the right sweepers to actually take advantage of those boosts, and even when they do, they typically can't beat Tina. For added security you can definitely add Prankster Haze or something like that, but I find it to be fairly unnecessary.