Magnezone

Magnezone is one of the best Sturdy Pokemon in the 1v1 metagame, with impressive Special Attack, excellent typing, and notable natural bulk. Thanks to its ability Sturdy, it is guaranteed to survive any singular attack - disregarding Mold Breaker - when it is at full HP and fire back with a powerful Gigavolt Havoc, immediately knocking out frail offensive Pokemon such as Mega Charizard Y, Porygon-Z, Genesect, and Kartana. Magnezone also has an excellent matchup against bulkier offense and stall Pokemon, as it can utilize Metal Sound and Electroweb to lower the foe's Special Defense in order to OHKO with Gigavolt Havoc and outspeed opposing Pokemon to avoid them recovering health or boosting their own Special Defense before Magnezone can land a solid hit, which allows it to beat Pokemon such as Magearna, Tapu Lele, bulky Mega Gardevoir, Normalium Z Porygon-Z, and even Pokemon like Chansey, Blissey, and non-Amnesia Mega Venusaur. While Magnezone can get the job done mostly with those three moves, it also has access to useful utility options such as Protect and Mirror Coat, as well as a secondary STAB move in the form of Flash Cannon for consistent damage. Unfortunately, Magnezone's middling base 60 Speed means that it needs to invest heavily in order to outspeed relevant threats even after an Electroweb. Magnezone also has trouble against Pokemon that can tank the damage done through Gigavolt Havoc and Pokemon that prevent Magnezone from utilizing Metal Sound, such as Mega Charizard X, Dragonite, bulky Mega Metagross, and bulky Mega Tyranitar, as well as any Ground-type Pokemon, such as Zygarde, Landorus-T, Donphan, Golem, and Excadrill.