Chansey

Chansey is the definition of the Balanced Hackmons metagame. It has a titanic HP stat, which is only second to Blissey's. This combined with Eviolite allows Chansey to have substantial special bulk and decent physical bulk. Imposter copies the opponent's stats bar HP, while Fur Coat turns Chansey into an impressive physical wall by doubling her Defense stat, making both abilities excellent choices for Chansey. Imposter Chansey restricts the metagame to the point where you must run a wall or, at the very least, a check to your own sweeper; otherwise, your team can and will be swept by it. Fur Coat Chansey is an exceptional mixed wall that can take repeated punishment from even Mega Rayquaza despite its large attacking stats, and isn't hit super-effectively by most coverage moves due to its pure Normal typing. Due to its access to Eviolite and Lucky Punch for Imposter sets, Chansey is the superior choice over Blissey outside of a few niches Blissey has. Neither Chansey set likes Knock Off and Spore, especially Fur Coat Chansey, which no longer counters Mega Diancie and Mega Rayquaza if they carry Spore, so scouting the foe's moveset is highly recommended.