Bralwer's Flurry, Flurry of Blows, and Two-Weapon Fighting

[HighTechnocrat]

How do Two-Weapon Fighting, Brawler's Flurry, and Flurry of Blows (regular version or unchained) interact? Do any of them work together? Either way, why? If possible, please include any relevant FAQ answers or errata. In having absolutely no luck finding reliable sources with thorough answers.

[burkoJames]

Lets bet more complicated - Chained Flurry or Unchained Flurry? the language changes.

Long story short, they are all variations of the same mechanic, stating they act as are TWF. As such, you shouldn't stack them, you get one or the other.

Lets get some rules here (all from the Archives of Nethys)

Chained Flurry of Blows:

Flurry of Blows (Ex): Starting at 1st level, a monk can make a flurry of blows as a full-attack action. When doing so he may make one additional attack using any combination of unarmed strikes or attacks with a special monk weapon (kama, nunchaku, quarterstaff, sai, shuriken, and siangham) as if using the Two-Weapon Fighting feat (even if the monk does not meet the prerequisites for the feat). For the purpose of these attacks, the monk's base attack bonus from his monk class levels is equal to his monk level. For all other purposes, such as qualifying for a feat or a prestige class, the monk uses his normal base attack bonus.

At 8th level, the monk can make two additional attacks when he uses flurry of blows, as if using Improved Two-Weapon Fighting (even if the monk does not meet the prerequisites for the feat).

At 15th level, the monk can make three additional attacks using flurry of blows, as if using Greater Two-Weapon Fighting (even if the monk does not meet the prerequisites for the feat).

A monk applies his full Strength bonus to his damage rolls for all successful attacks made with flurry of blows, whether the attacks are made with an off-hand or with a weapon wielded in both hands. A monk may substitute disarm, sunder, and trip combat maneuvers for unarmed attacks as part of a flurry of blows. A monk cannot use any weapon other than an unarmed strike or a special monk weapon as part of a flurry of blows. A monk with natural weapons cannot use such weapons as part of a flurry of blows, nor can he make natural attacks in addition to his flurry of blows attacks.

Unchained Flurry of Blows:

Flurry of Blows (Ex): At 1st level, a monk can make a flurry of blows as a full-attack action. When making a flurry of blows, the monk can make one additional attack at his highest base attack bonus. This additional attack stacks with the bonus attacks from haste and other similar effects. When using this ability, the monk can make these attacks with any combination of his unarmed strikes and weapons that have the monk special weapon quality. He takes no penalty for using multiple weapons when making a flurry of blows, but he does not gain any additional attacks beyond what’s already granted by the flurry for doing so. (He can still gain additional attacks from a high base attack bonus, from this ability, and from haste and similar effects).

At 11th level, a monk can make an additional attack at his highest base attack bonus whenever he makes a flurry of blows. This stacks with the first attack from this ability and additional attacks from haste and similar effects.

Brawler's Flurry:

Brawler’s Flurry (Ex): Starting at 2nd level, a brawler can make a brawler’s flurry as a full-attack action. When doing so, a brawler has the Two-Weapon Fighting feat when attacking with any combination of unarmed strikes, weapons from the close fighter weapon group, or weapons with the “monk” special feature. She does not need to use two different weapons to use this ability.

A brawler applies her full Strength modifier to her damage rolls for all attacks made with brawler’s flurry, whether the attacks are made with an off-hand weapon or a weapon wielded in both hands. A brawler can substitute disarm, sunder, and trip combat maneuvers for unarmed attacks as part of brawler’s flurry. A brawler with natural weapons can’t use such weapons as part of brawler’s flurry, nor can she make natural weapon attacks in addition to her brawler’s flurry attacks.

At 8th level, the brawler gains use of the Improved Two-Weapon Fighting feat when using brawler’s flurry. At 15th level, she gains use of the Greater Two-Weapon Fighting feat when using brawler’s flurry.

Brawler's Flurry is explicitly TWF while flurrying. So you can not combine the two.

Chained Flurry is also explicitly functioning as TWF. You can not use TWF, CHained Flurry and/or Brawler's flurry together.

Moreover, as they are not the same ability (they operate differently), and do not state they stack, Brawler's Flurry and/or Chained Flurry do not stack your brawler and Chained monk levels for the purposes of their effects.

Unchained is actually probably the most direct. It states that "He takes no penalty for using multiple weapons when making a flurry of blows, but he does not gain any additional attacks beyond what’s already granted by the flurry for doing so. (He can still gain additional attacks from a high base attack bonus, from this ability, and from haste and similar effects)." So while you can use 2 weapons, you gain none of the bonuses or penalties from TWF.

Chained flurry has been FAQed several times, and last ruling I heard was that you can use any number of weapons, take any attack with any equipped weapon or unarmed strike, and take no TWF penalties. (i'd list the faq, but I haven't been able to find them since the redesign)

I imagine it is assumed the same rules apply to Brawlers flurry.