Lel, just use some of the biggest threats in OU .3.
Bisharp @ BlackGlasses / Life Orb
Ability: Defiant
EVs: 4 HP / 252 Atk / 252 Spe
Adamant Nature
- Knock Off
- Sucker Punch
- Iron Head
- Swords Dance
Ranked #11th on the Usage Lists, and for a good reason - Bisharp loves to switch into Defog and Sticky Web, and unlike a lot of Physical Pokemon cannot be reliably checked by Landorus-T, due to his ability Defiant. Bisharp forces alot of switches, allowing it to easily get up a Swords Dance and proceed to sweep teams with Dual STABs + Priority Sucker Punch
Landorus-Therian @ Choice Scarf
Ability: Intimidate
EVs: 252 Atk / 24 Def / 232 Spe
Jolly Nature
- Earthquake
- U-turn
- Knock Off / Superpower
- Stone Edge
The most common Pokemon in Competitive OU, and one of the S Class Pokemon this gen. This thing switches into half the tier, thanks to his respectable bulk, typing and excellent ability Intimidate, making him an effective Scout and pivot. His sky-high attack also let's him function as a lategame cleaner, after the Opponent's team has been weakened.
You can also run the dangerous double dance set which capitalises on Landorus-t's ability to force switches, to set up either Swords Dance or Rock Polish - Rock Polish to go through frailer, more offensive teams and Swords Dance in order to take down more defensive teams.
Landorus-Therian @ Leftovers
Ability: Intimidate
EVs: 56 HP / 220 Atk / 232 Spe
Adamant Nature
- Swords Dance
- Rock Polish
- Earthquake
- Stone Edge
Talonflame @ Sharp Beak
Ability: Gale Wings
EVs: 120 HP / 252 Atk / 136 Spe
Jolly Nature
- Swords Dance
- Brave Bird
- Flare Blitz
- Roost
Another one of the most common OU Pokemon at #7 in usage. Swords Dance lets it set up, Dual Stabs hit hard and priority Brave Bird let's it bypass Speed and just slam your opponents hard.
You can also consider running the older Choice Band Talonflame, which runs U-Turn and Tailwind or something similar instead of Swords Dance and Roost. Another option is the Natural Gift set, which allows Talonflame to beat one of the following, depending on what Berry you use - Heatran and Rotom-W, which are the two biggest Talonflame counters in the tier.