Curse helps Snorlax cover its mediocre physical bulk while simultaneously building enough power to wallbreak or clean late-game. Body Slam for STAB is fairly strong, accurate, and has a high chance to paralyze foes, which can help teammates, allow Snorlax to actually outspeed a threat, or grant Snorlax even more turns to set up or heal. Return is also an option for additional power, which can especially help for muscling through Pokemon such as Groudon, Kyogre, Latios, Latias, and Mewtwo. Protect is a valuable move to increase Leftovers recovery and scout moves, especially from Choice Band users—which teammates can easily handle if they lock into a Fighting-type move—or Pokemon with Explosion or Self-Destruct such as Metagross, Forretress, and Mewtwo. Shadow Ball and Earthquake are both worthy coverage options to combat the Ghost-, Steel-, and Rock-types intent on countering Snorlax such as Metagross, Forretress, Jirachi, Steelix, Omastar, Dusclops, Gengar, Shedinja, Regirock, and Registeel. Shadow Ball is more common because Earthquake leaves Snorlax completely helpless against Gengar and Shedinja. Fire Blast is also notable, especially on sun teams, for blasting Skarmory and Forretress; two common Snorlax switch-ins that seek to lay Spikes. Self-Destruct sacrifices longevity and cleaning ability for maximum wallbreaking potential. Rest allows Snorlax to remove status and continue boosting against Pokemon that are unable to 4HKO it, which form a substantial portion of the tier after a Curse. Rest is most potent against stall teams, and it should typically be run alongside Shadow Ball; no Pokemon is immune to both Ghost and Normal, letting Rest Snorlax eventually break through all foes with enough boosts. Sleep Talk can be used alongside Rest to make the most of its sleep turns.
252 Special Defense EVs with a Careful nature are important to minimize damage from Latios, Latias, and Mewtwo, and because Special Defense is the defensive stat Snorlax cannot increase via setup. 136 Defense EVs allow Snorlax to always avoid being 2HKOed by Groudon's Earthquake after one Curse. The remaining 120 HP EVs further increase Snorlax's overall bulk, but these can also be placed in Attack for additional damage output early on, which can be especially helpful when running Return. A more offensive EV spread of 104 HP / 152 Atk / 252 SpD can be justified on sets with Protect to supplement recovery, and it further increases Snorlax's wallbreaking potential against Kyogre, Latios, and Latias. Immunity or Thick Fat is utilized depending on team needs; Immunity prevents Toxic from debilitating Snorlax or forcing it to use Rest, while Thick Fat helps it tank attacks such as Latios's Ice Beam and Mewtwo's Fire Blast.
CurseLax functions on a variety of teams and archetypes, and it can customize its movepool, EVs, and even ability to meet specific needs of a team. This particular set appreciates cleaners and sweepers that appreciate Snorlax's ability to pressure Groudon, Kyogre, Latios, Latias, and defensive Steel-types. Offensive CurseLax especially appreciates secondary and tertiary Latios and Latias checks, which relieve its pressure to check these threats while allowing it to wallbreak more aggressively. Therefore, Pokemon capable of taking Thunder such as Steelix, Shedinja, Blissey, Groudon, and Swampert, or Dragon Claw such as Metagross, Forretress, Jirachi, or Registeel, are good teammates. Pokemon that pressure Kyogre and Groudon can help Snorlax break through them, such as Mewtwo, Metagross, Ho-Oh, Steelix, and Rayquaza. Spikes support makes offensive CurseLax especially potent, as it wears down several of its major checks, so setters such as Forretress, Skarmory, Deoxys-D, Deoxys-S, Omastar, and Qwilfish are great choices. Trappers such as Magneton and Dugtrio that can remove Steel-types are natural offensive partners.