Yet another specially defensive wall:
Cradily @ Stone Plate / Meadow Plate
Ability: Storm Drain
EVs: 248 HP / 8 Atk / 252 SpD
Careful Nature / Sassy Nature
- Stealth Rock
- Recover
- Rock Slide
- Toxic / Giga Drain
Thanks to the Special Defense boost from Sand and its water immunity, Cradily can put in work as a special wall. Due to its bulk and access to reliable recovery it makes for a great Stealth Rock setter, and supports any Sand Rush users on your team, too. Rock Slide is its best choice to hit incoming Flying, Fire, Bug or Ice types. Toxic is good against opposing walls, though if you want to take advantage of possible Storm Drain boosts and the additional recovery, Giga Drain makes for a good STAB attack. In that case, a Sassy nature is preferred to not lower the power of Giga Drain.
Instead of increasing the Special Defense of your Cradily, you can also give it a Meadow Plate for pseudo-Leftovers recovery, weaker Earthquakes from enemies and to power up Giga Drain.
And just for the lulz:
Wallrein 2.0 (Avalugg) @ Icicle Plate
Ability: Ice Body
EVs: 248 HP / 8 Atk / 252 Def
Impish Nature
- Substitute / Toxic
- Recover
- Avalanche
- Earthquake / Toxic / Roar
Meet one of the sturdiest walls of all Pokémon, which is still below NU just because it´s an Ice type. I am not sure if it makes up for the loss of Sturdy, but Ice Body Avalugg gets Leftovers-esque recovery and can annoy the opponent with hail. I have no idea how usable it is with other weather running rampant, so instead of hiding behind a sub to annoy your opponent, you can also just throw around Toxic. Don´t even bother giving it Rapid Spin as a Pokémon weak to Stealth Rock and Toxic Spikes needs hazard removal support from something else. Recover significantly improves your recovery alongside Ice Body (which is why I would consider this superior to any other Ice Body Pokémon), while Avalanche is a good STAB that gets powered up iif they attack you to break your Substitute. Earthquake hits Rock, Steel or Fire types hard, while Toxic works when you´re behind a sub. Or you can just use Roar to switch your enemy´s Fire type out again. The nature and EVs are all on the physical side, because if you want to use Avalugg at all in OU, you want to capitalize on that Def stat.
And finally something offensive:
THE Revenge Killer (Talonflame) @ Spooky Plate
Ability: Gale Wings
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Brave Bird
- Flare Blitz
- Steel Wing / Swords Dance
- Roost / Tailwind
Now there is no escape from Smogonbird. If your enemy kills something with his Grass, Bug or Fighting Pokémon, he can kiss it goodbye. Since Talonflame gets only one turn to kill its opponent and has no Choice Band or Sharp Beak to power up its attack, Adamant nature is required. Brave Bird really needs no explanation. Flare Blitz deals with Scizor, who is not fast enough to escape with a U-Turn. Steel Wing is an option for Mega Diancie (Adamant max Speed Talonflame outspeeds Naive/Timid max Speed Mega Diancie by ONE point :) ) and has a 56,3 % chance to OHKO. If you are absolutely sure that the Pokémon you are trapping with Talonflame can not harm you, you can even set up a Swords Dance and then kill whatever switches in on the next turn. Roost is for recovery after you have killed something with your recoil attacks, though Tailwind is also an option to prepare a sweep by another Pokémon.
Cradily @ Stone Plate / Meadow Plate
Ability: Storm Drain
EVs: 248 HP / 8 Atk / 252 SpD
Careful Nature / Sassy Nature
- Stealth Rock
- Recover
- Rock Slide
- Toxic / Giga Drain
Thanks to the Special Defense boost from Sand and its water immunity, Cradily can put in work as a special wall. Due to its bulk and access to reliable recovery it makes for a great Stealth Rock setter, and supports any Sand Rush users on your team, too. Rock Slide is its best choice to hit incoming Flying, Fire, Bug or Ice types. Toxic is good against opposing walls, though if you want to take advantage of possible Storm Drain boosts and the additional recovery, Giga Drain makes for a good STAB attack. In that case, a Sassy nature is preferred to not lower the power of Giga Drain.
Instead of increasing the Special Defense of your Cradily, you can also give it a Meadow Plate for pseudo-Leftovers recovery, weaker Earthquakes from enemies and to power up Giga Drain.
And just for the lulz:
Wallrein 2.0 (Avalugg) @ Icicle Plate
Ability: Ice Body
EVs: 248 HP / 8 Atk / 252 Def
Impish Nature
- Substitute / Toxic
- Recover
- Avalanche
- Earthquake / Toxic / Roar
Meet one of the sturdiest walls of all Pokémon, which is still below NU just because it´s an Ice type. I am not sure if it makes up for the loss of Sturdy, but Ice Body Avalugg gets Leftovers-esque recovery and can annoy the opponent with hail. I have no idea how usable it is with other weather running rampant, so instead of hiding behind a sub to annoy your opponent, you can also just throw around Toxic. Don´t even bother giving it Rapid Spin as a Pokémon weak to Stealth Rock and Toxic Spikes needs hazard removal support from something else. Recover significantly improves your recovery alongside Ice Body (which is why I would consider this superior to any other Ice Body Pokémon), while Avalanche is a good STAB that gets powered up iif they attack you to break your Substitute. Earthquake hits Rock, Steel or Fire types hard, while Toxic works when you´re behind a sub. Or you can just use Roar to switch your enemy´s Fire type out again. The nature and EVs are all on the physical side, because if you want to use Avalugg at all in OU, you want to capitalize on that Def stat.
And finally something offensive:
THE Revenge Killer (Talonflame) @ Spooky Plate
Ability: Gale Wings
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Brave Bird
- Flare Blitz
- Steel Wing / Swords Dance
- Roost / Tailwind
Now there is no escape from Smogonbird. If your enemy kills something with his Grass, Bug or Fighting Pokémon, he can kiss it goodbye. Since Talonflame gets only one turn to kill its opponent and has no Choice Band or Sharp Beak to power up its attack, Adamant nature is required. Brave Bird really needs no explanation. Flare Blitz deals with Scizor, who is not fast enough to escape with a U-Turn. Steel Wing is an option for Mega Diancie (Adamant max Speed Talonflame outspeeds Naive/Timid max Speed Mega Diancie by ONE point :) ) and has a 56,3 % chance to OHKO. If you are absolutely sure that the Pokémon you are trapping with Talonflame can not harm you, you can even set up a Swords Dance and then kill whatever switches in on the next turn. Roost is for recovery after you have killed something with your recoil attacks, though Tailwind is also an option to prepare a sweep by another Pokémon.