Choice Band + Mold Breaker Primal Groudon is one of the most powerful Choice item attackers in the metagame due to its incredible STAB moves, great defensive typing, immunity to burns, and amazing bulk. V-create is a ludicrously powerful STAB move that threatens the entirety of the unresisted metagame, notably OHKOing physically defensive Wonder Guard Slaking, Arceus, Mega Audino, and Cresselia after Stealth Rock. In contrast, Thousand Arrows is a virtually unresisted STAB move that is more spammable than V-create thanks to having no drawbacks, freely threatening slower Pokemon, such as Substitute + Baton Pass Wonder Guard Xerneas and Wonder Guard Mega Scizor, alongside paralyzed offensive Pokemon, like opposing Primal Groudon, chipped Mold Breaker Mega Rayquaza, slightly damaged Mega Mewtwo X, Mega Mewtwo Y, and Mega Gengar. Beat Up is a great coverage option to heavily damage Prankster Giratina and the rare Mega Slowbro, which would ordinarily switch in on Choice Band Primal Groudon. Alternatively, Precipice Blades still 2HKOes Giratina while also threatening non-Flying-types much more effectively than Beat Up; however, opposing Prankster Giratina has a good chance to successfully fish for a miss by repeatedly using Recover. Knock Off item removal can be useful when forcing mind games, especially against defensive Wonder Guard users running Shed Shell when running a Shadow Tag teammate, and it still threatens Magic Bounce Giratina if Giratina has an intact item and even slight chip damage. Trick is a great option to incapacitate Prankster Giratina, supporting offensive and Substitute + Baton Pass Wonder Guard teammates by shutting down their largest counter. U-turn allows Primal Groudon to retain momentum for its team, as well as continually forcing chip damage against its main check in Giratina. Primal Groudon outspeeds most relevant threats without Speed investment at +2, and the extra HP investment helps it survive -ate Speed from users like Abomasnow.
Primal Groudon works best on bulky offense teams, which appreciate its ability to force coinflip scenarios against slower teams and create momentum for offensive teammates. Prankster Giratina benefits Primal Groudon greatly by Imposter-proofing it thanks to its massive physical bulk and V-create resistance. Since opposing Prankster Giratina is Primal Groudon's most common switch-in, Huge Power Dark-types that can remove it with Pursuit, such as Mega Gyarados, Mega Tyranitar, and Yveltal, are valuable partners for it; they can also heavily damage most Choice item + Shadow Tag users, which pick a weakened Primal Groudon off. In particular, Mega Gyarados is great, as it can also switch into an opposing Shell Smash Primal Groudon if healthy and force it out with Water Shuriken. Substitute + Baton Pass Wonder Guard users allow Primal Groudon to come in safely with a Substitute, helping it beat offensive Pokemon like opposing Primal Groudon and Protean Mega Latios one-on-one. In particular, Substitute + Baton Pass Wonder Guard Xerneas has great utility in forcing Prankster Giratina and most Magic Bounce users out with Moonblast, and it can run a diverse array of support options in its filler moveslot, such as Stealth Rock, Defog, Aromatherapy, paralysis support in Glare, Dark Void, Taunt, and even Wish or Shell Smash support for Primal Groudon. Special Mold Breaker users, especially more powerful ones like Mega Latios, Mega Diancie, Choice Specs Mega Rayquaza, and Dialga, can force Giratina out after Primal Groudon uses U-turn. Paralysis support from the likes of Prankster Giratina, as well as select support Wonder Guard users, can make Primal Groudon even more threatening by providing free turns. Also, Primal Groudon can force out paralyzed offensive threats like Mega Gengar, Huge Power Mega Mewtwo X, Mega Mewtwo Y lacking a Choice Scarf, Mega Latios, and special Mega Rayquaza. Shadow Tag users can work well with Knock Off Primal Groudon, as the likes of Wonder Guard Primal Kyogre and bulky Gastro Acid + Wonder Guard users like Arceus are secondary switch-ins to it. Entry hazard setters, such as Substitute + Baton Pass Wonder Guard users, defensive Wonder Guard users, and bulky Mold Breaker teammates, can bolster Primal Groudon's offensive prowess, as the additional chip damage from Stealth Rock affects Primal Groudon's KO rolls in a wide variety of instances. Defensive Wonder Guard users can provide Defog and Aromatherapy support, keeping Primal Groudon healthy over the course of a game.