This is arguably Braviary's most dangerous set—with a combination of a good bulk, access to reliable recovery, and a reliable, strong STAB move, it makes for a dangerous Bulk Up user. Not only can this variant of Braviary easily deal with defensive teams thanks to the aforementioned traits, but it can also set up on Pokemon that could otherwise deal with its other sets. For example, Braviary can set up a Substitute on Rock-types that rely on Stone Edge, such as Regirock or Carracosta, when they switch in, then use a combination of that and Roost until they run out of PP for Stone Edge, and then start setting up Bulk Ups as they are unable to damage it with a super effective attack.
Bulk Up is the main move on this set, patching up Braviary's uninvested Defense to cushion attacks from Rock-types in particular and making its already impressive Attack higher. Roost allows Braviary to keep itself healthy, as it tends to get worn down from a combination of Substitute, Brave Bird recoil, and repeated attacks from the opposition. Substitute allows Braviary to get in additional boosts and avoid status moves. Many weaker Pokemon, such as Tangela, Alomomola, Roselia, and defensive Seismitoad, will find themselves unable to break past Braviary's Substitutes in one hit, which means that Braviary can set up an additional Bulk Up and keep its Substitute intact for the next Pokemon. Brave Bird is the best option for the STAB move, as even though it causes recoil, nothing is immune to Brave Bird, making it more optimal for a mono-attacker than a Normal STAB move. Even without any boosts, it still does quite a bit of damage to any Pokemon that doesn't resist it.
The given EVs allow Braviary to outspeed Adamant Torterra and everything slower, with the remaining EVs being thrown into HP and Special Defense. Maximum HP allows Braviary to make 101 HP substitutes, and even though users of Seismic Toss are rare, being able to set up on them is always nice. Defiant is chosen as the ability—while it doesn't come in handy too often, it is the only ability that actually helps it out. Braviary could potentially run more Speed, but there isn't much that is worth catching up to without sacrificing Braviary's bulk. Leftovers should be used as the item, as it allows Braviary to receive passive recovery as it is setting up. Return could be used for the attacking option, as it causes no recoil damage and it hits Electric-types neutrally, but Ghost-types will then wall this set completely, with Misdreavus in particular no longer being set up fodder.
This variant of Braviary is rather self-sufficient, but it finds it challenging to set up against Electric-types and can also be revenge killed by them. A bulky Ground-type such as Seismitoad, Piloswine, or Golurk therefore makes a good partner; they are also capable of taking down Bastiodon and Probopass, which can deal with Braviary with Roar and Power Gem, respectively. Toxic Spikes, and to an extent Spikes, support is very helpful for wearing down Rock-types quicker, as even though Braviary can potentially set up on them, they still pose a threat to Braviary. As a result, Garbodor is a good partner, and Braviary can switch into an Earthquake that might be targeted at it. Finally, Pokemon, generally Normal-types, that struggle against Rock-types but have a means of wearing them down via coverage moves, such as Zangoose, Kangaskhan, or Tauros, appreciate the fact that Braviary can use them to set up on under the right circumstances, although note that Braviary cannot directly switch in in these situations.