Gengar

Non-mega Gengar runs Focus Sash as a guaranteed Destiny Bond setup piece: survive a KO hit at full HP, then take the attacker down with it. 32 SpA and 32 Spe with Timid nature ensure Gengar outspeeds nearly the entire unboosted metagame for both proactive Shadow Ball and Sludge Bomb damage and reactive Destiny Bond timing. Cursed Body has real game value: randomly disabling a move after being hit can lock a support Pokemon into an unusable move for critical turns. It handles Archeludon and other bulky setup threats that the snow offense core cannot cleanly OHKO.