Zamazenta @ Chesto Berry / Heavy-Duty Boots / Leftovers / Weakness Policy
Ability: Dauntless Shield
Tera Type: Fairy / Water / Steel / Fire / Dark
EVs: 248 HP / 28 SpD / 232 Spe
- Body Press
- Iron Defense
- Rest / Howl
Zamazenta is one of the best Pokemon in the National Dex tier, being able to run a plethora of sets and be used on lots of playstyles. This one uses Body Press to become a dangerous win condition. Dauntless Shield got nerfed this generation so that it does not boost Defense after Zamazenta switches out, but Zamazenta is still great as a win condition. Body Press takes advantage of Iron Defense, STAB, and Dauntless Shield as well as Zamazenta's 266 Defense stat with these EVs and is the key move on this set, being able to rob games. Crunch is for Pokemon such as Skeledirge and Gholdengo. Iron Defense is to tank hits better while becoming a dangerous threat simultaneously. Rest is for healing and getting rid of status conditions and works nicely with the Chesto Berry, Howl is for boosting your Attack which lets you muscle through Ghost types better, but I doubt you really need it since all you have to boost it is Crunch (I don't think Body Press is affected by Attack boosts). 232 Speed and Jolly lets it outspeed Jolly Mega Lopunny, which lets you put the rest of the EVs into defensive stats. Tera Fairy and Water don't do anything to patch up Zamazenta's weaknesses, but they're great defensive types that are better than the Fighting type. Tera Steel lets you patch up all of Zamazenta's weaknesses as a Fighting type and is also another overall good Defensive type. Tera Fire and Dark are some niche ones but Dark powers up Crunch and makes you resist Shadow Ball, and Fire lets you ignore Will-o-Wisp from Pokemon like Skeledirge, it's pretty bad outside of that though and the weakness to Stealth Rock hurts.
Good teammates for Zamazenta
Cyclizar has Shed Tail which can give Zamazenta ease in setting up, and blocks status moves.
Grimmsnarl has great synergy with Zamazenta, as it has Prankster Dual Screens, Taunt, and Parting Shot, all the moves it needs.
Those two are definitely the most important ones but you can use things like Gholdengo, Dragapult, Magearna, Regieleki, Espathra, Blissey/Chansey, like I said it's a very versatile mon so you can use a lot of Pokemon with it.