Here is an unorthodox set that gets a lot of surprise kills and is difficult to shut down:
EVs: 248 Atk / 252 SpA / 8 Spe
Nature: Naughty
Item: Life Orb
- Brave Bird
- Fire Blast
- Hidden Power Ground / Hidden Power Ice
- U-Turn / Roost
8 Spe outspeeds 252 Spe Rash Kyu-B, so you can use Fire Blast against it, which hits it for similar damage with Brave Bird but doesn't have recoil. This set can 2HKO many of Talonflame's usual switch-ins, such as Hippowdon, Landorus-T, Heatran, Gliscor, and Krookodile, while also not suffering recoil to kill Pokemon with your Fire STAB. U-turn covers nicely Tyranitar, Rotom-W, and Rotom-H, and with SR up, basically means that nothing other than Slowbro is a safe switch-in. Hidden Power Ice is also a nice way to say fuck you to Rocky Helmet Garchomp, a Pokemon offensive teams love to use to fuck up Talonflame. Here are some calcs:
- 252 SpA Life Orb Talonflame Fire Blast vs. 252 HP / 0 SpD Hippowdon: 211-250 (50.2 - 59.5%) -- guaranteed 2HKO after Stealth Rock and Leftovers recovery
- 252 SpA Life Orb Talonflame Fire Blast vs. 252 HP / 4 SpD Landorus-T: 192-227 (50.2 - 59.4%) -- guaranteed 2HKO after Stealth Rock and Leftovers recovery
- 252 SpA Life Orb Talonflame Fire Blast vs. 252 HP / 0 SpD Gliscor: 204-242 (57.6 - 68.3%) -- guaranteed 2HKO after Stealth Rock and Poison Heal
- 252 SpA Life Orb Talonflame Fire Blast vs. 252 HP / 0 SpD Krookodile: 216-255 (54.8 - 64.7%) -- guaranteed 2HKO after Stealth Rock and Leftovers recovery
- 252 SpA Life Orb Talonflame Hidden Power Ground vs. 4 HP / 0+ SpD Heatran: 203-244 (62.6 - 75.3%) -- guaranteed 2HKO after Stealth Rock and Leftovers recovery (or 2HKO with BB + HP Ground with SR in play)
- 252 SpA Life Orb Talonflame Hidden Power Ground vs. 252 HP / 252+ SpD Heatran: 166-198 (43 - 51.2%) -- 47.7% chance to 2HKO after Stealth Rock and Leftovers recovery
- 252 SpA Life Orb Talonflame Hidden Power Ice vs. 252 HP / 4 SpD Landorus-T: 286-338 (74.8 - 88.4%) -- 6.3% chance to OHKO after Stealth Rock
- 252 SpA Life Orb Talonflame Hidden Power Ice vs. 252 HP / 0 SpD Gliscor: 296-354 (83.6 - 100%) -- 75% chance to OHKO after Stealth Rock
- 252 SpA Life Orb Talonflame Hidden Power Ice vs. 252 HP / 0 SpD Garchomp: 270-322 (64.2 - 76.6%) -- guaranteed 2HKO after Stealth Rock
So, just set up SR, get this boy in freely, and start having fun. This set can also wallbreak against balanced or bulky offense teams, so you can either use it early game to bust some holes or keep it for late-game if you see some threatening sweeper. Either way, you should definitely have another revenge killer as this set likes to come in early-game to do some damage, and sometimes it won't make it to late-game.