Moves
Dragon Dance enables Tyrunt to outspeed the entire unboosted metagame after a boost while increasing its Attack. Stone Edge is a powerful STAB move that dents anything that doesn't resist it. Rock Slide trades firepower for consistency and is a decently powerful STAB move that hits Flying- and Fire-types for super effective damage, but it is usually much weaker than Stone Edge and as such doesn't deal with bulkier foes as reliably. Outrage is the strongest STAB option Tyrunt gets and can sweep weakened teams after a Dragon Dance boost due to its great neutral coverage. Earthquake gives Tyrunt perfect coverage in tandem with its STAB combination, and it allows Tyrunt to threaten the common Steel-types in the tier, such as Pawniard and Magnemite. Superpower is an alternative that gives Tyrunt a way to deal with Steel-types that take neutral damage from Earthquake, such as Ferroseed, but it has the downside of lowering Tyrunt's Attack. Dragon Claw can be used instead of Outrage in order to not lock Tyrunt into the same move, but it is weaker than Outrage and is not that threatening even after a boost. Iron Head or Iron Tail can be used to hit Fairy-types such as Snubbull and Cottonee.
Set Details
The given EV spread along with a Jolly nature maximizes Tyrunt's Attack while enabling it to reach 15 Speed, allowing it to outspeed Pokemon such as pivot Vullaby and defensive Chinchou before a Dragon Dance and everything up to and including base 14 Speed Choice Scarf users, such as Modest Magnemite, at +1. The remaining EVs are placed into Special Defense to slightly increase Tyrunt's special bulk. Sturdy is very useful, as it allows Tyrunt to survive at least one hit if at full health, guaranteeing a chance to use Dragon Dance. Berry Juice works well in combination with Sturdy, healing Tyrunt back to full HP and re-activating Sturdy. Running 23 HP IVs enables Tyrunt to reach 21 HP, which allows it to completely heal after Berry Juice activates and thus regain Sturdy.
Usage Tips
Tyrunt should be used as a late-game sweeper when its checks have been weakened or removed, such as bulky Fighting-types and Steel-types like Ferroseed. Tyrunt can also be used to wallbreak early-game to punch holes for another sweeper, provided that Tyrunt is not favorable to sweep the opposing team. It is best to not switch Tyrunt directly into an attack, as Sturdy being broken really reduces its longevity. Similarly, entry hazards should be removed before attempting to sweep in order to keep Sturdy intact. It is best to send Tyrunt in after a teammate has been KOed or through a slow U-turn or Volt Switch. Tyrunt should not set up until its checks have been weakened or eliminated in order to get the best chance of sweeping. If all priority users have been KOed and Sturdy is intact, Tyrunt can opt to set up two Dragon Dances due to Sturdy and Berry Juice, becoming incredibly powerful and outspeeding most Choice Scarf users. Set up appropriately if Tyrunt is carrying a specific coverage move over another; for example, if Tyrunt is running Fire Fang or Superpower, it can set up if an opposing Ferroseed is present. If Sturdy is intact, Tyrunt can even set up on Pokemon that hit it for super effective damage, such as Timburr and Mienfoo. Tyrunt must be careful of being hit by a status move, as status will cripple Tyrunt's longevity or sweeping potential. When sweeping, Outrage should only be used once all Fairy- and Steel-types have fainted.
Team Options
Tyrunt appreciates Pokemon that can check the Fighting-types that threaten it, such as Snubbull and Foongus. Steel-types such as Magnemite and Pawniard can get rid of the Fairy-types that trouble Tyrunt. Pokemon such as Snivy, Vullaby, and Staryu can handle the threatening Ground-type attackers for Tyrunt. Fighting- and Ground-type Pokemon, such as Mienfoo and Mudbray, can threaten Steel-types for Tyrunt, particularly Pawniard and Magnemite. In turn, Tyrunt can check and threaten the Flying-types that trouble them. Fire-types like Ponyta and Larvesta are able to eliminate Ferroseed, which walls Tyrunt completely if it is not carrying Fire Fang or Superpower, and they can also remove other Steel-types and resist the Ice- and Fairy-type attacks that threaten Tyrunt. Powerful wallbreakers like Doduo and Corphish can weaken an opposing team to make it easier for Tyrunt to sweep late-game. Diglett is able to trap and KO Steel-types, making it easier for Tyrunt to sweep, while Memento support from the likes of Cottonee and Diglett provides Tyrunt with a reliable setup opportunity. Entry hazard support from the likes of Onix and Ferroseed can aid Tyrunt when sweeping. Pokemon that remove entry hazards, such as Drilbur and Staryu, allow Tyrunt to switch in without its Sturdy being broken by hazards. U-turn and Volt Switch support grants Tyrunt safe switches, so Pokemon like Mienfoo and Magnemite make good teammates.