Imposter Eviolite Chansey is quite over powered. That brings the caution of using stat+ and sweep Pokemon till opponent team been checked or it's been gotten rid off.
Ive peaked 1# in Hackmons and 1# in Balanced Hackmons in the last days. From what ive seen i can tell Hackmons focus arround Wonderguard and Huge/Pure Power, while Balanced Hackmons focus arround Contrary and Prankster. This set has given me nice success in the BH meta. Latias-Mega @ Soul Dew Trait: Prankster EVs: .... Modest Nature -Spacial Rend -Stored Power -Heart Swap -Substitude The set beats most common P-Groudon (Contrary) and P-Kyogre(Poison Heal) sets. it has enough power to 2HKO everything less bulky than Mewtwo-Y unboosted. (Similar to classic Prankster Heart Swap + Baton Pass Rhydon) Night, If you spend turns on boosting, the opponent can Prankser Heart Swap/Haze/Topsy/Parting Shot or Imposter your boosts away. But since stat boosts are so effective you need a way to get them while attacking, which leads to Contrary. Priority is weak, predictable and uncontrolable. Prankster + Destiny Bond is much more effective revenge killing. Balanced Hackmons is in a very unique spot, every teammate has to be checked by another teammate. The the stat+ and sweep concept has to fall into that too, stat+ and (get) sweept. The fun part about Chansey is, it does not feel like a teammember, it acts more like a Trojan Horse deep in the enemies team.
@pokeboss9 you said mega mew2x is the strongest and quickest physical sweeper. I would like to point out thatmega aerodactyl is substantially quicker and primal groudon if given some way to be fast is more powerful with stab v-create. Also with sceptile it is hilariously weak to -ates and general priority.(both are certainly viable though)
Mega Aero is too weak for sweeping standarts of this tier. +2 252 Atk Mega Aerodactyl Brave Bird vs. 252 HP / 252 Def Primal Kyogre: 340-402 (84.1 - 99.5%) 252+ Atk Life Orb Mega Aerodactyl Crabhammer vs. 252 HP / 252+ Def Primal Groudon: 328-390 (81.1 - 96.5%) (43,5% to 1HKO if no +Def) Either you use Adamant and get outspeed by MewtwoY+, use Tough Claws and get killed by recoil, use Unburden and get -ate revengekilled or use Gale Wings and get walled, select Head Smash and miss, get speedtied and lose. Primal-Groudon is more than the "stongest physical sweeper". Its one of the few pokes you can use more than one at the top. Otherwise you want to avoid multiple same pokes due overlapping weaknesses. Mewtwo-X fits most criteria, faster than M-Ray, strong enough to (81,3% LO) 1HKO P-Groudon, (87,5%) to 1HKO Bold Evolite Chansey, easy to make Imposterprof, hard to predict if not knowing the set and acceptable bulk. You cant ask for more on a sweeper. (calcs done with +Spe)