Flurry of Blows and Monk BAB

[Propane]

Do you add the Monk's BAB to the Flurry of Blows modifier, or are they separate?

I'm starting a 2nd level monk, so his BAB is +1, with +0 Flurry. When Flurrying, am I adding BaB + Flurry + Str, or does the Flurry overwrite the BAB?

Confuse!

[Alexander Kilcoyne]

When you attack as a standard action etc. everything works normally off the monk's BAB.

When you flurry, treat the monk's BAB as monk level. Then subtract 2 from each attack roll. It effectively simulates two weapon fighting.

So when calculating flurry for a third level monk, your thinking BAB (3), Strength, Other Stuff.

[LoreKeeper]

The flurry (full BAB) is independent of the monk BAB. When flurrying you make use of full BAB (and then apply a flat -2 to all attacks as the flurry in many ways makes use of two-weapon-fighting mechanics). When not flurrying you use the monk's normal BAB. Maneuvers are a special case from level 3 onwards, in that they then also use full BAB.

So at level 2:

• Standard attack, attack of opportunity, maneuver: 1(bab) + str
  
• Flurry: 2(fullbab) + str - 2(for flurrying)
  

From level 3 onwards, maneuver training ensures that for maneuvers you use full BAB rather than monk BAB. Certain maneuvers count can be performed as an attack (i.e. over iterative or flurried attacks) these include: sunder, disarm and trip. That means for purposes of attacks-of-opportunity, for example, you can attack with monkBAB, or apply a attack maneuver (like trip) at fullBAB.

e.g. level 9 attack of opportunity:

• Normal attack: 6(bab) + str
  
• Attack maneuver (trip for example): 9(fullBAB) + str
  

Also, in case this wasn't obvious, when you mix in maneuvers into a full attack, like a flurry, they suffer all the penalties that would apply to the attacks.

e.g. level 9 flurry (mixing in some sunder attempts):
Doing sequence of: attack/sunder/attack/sunder
Initial attack bonus: 9 - 2 + Str
Breakdown:
1. Attack: 7 + Str
2. Sunder: 7 + Str
3. Attack: 2 + Str
4. Sunder: 2 + Str

Each attack/sunder benefits or suffers from all modifiers that apply, for example +2 from flanking, +1 from height advantage, -2 from being sickened, etc. But they may differ by special cases, e.g. +1 to attacks from Weapon Focus (unarmed) and +2 to sunders from Improved Sunder.

[Waffle_Neutral]

When you attack with your Flurry it's just the Flurry + Str + anything else that would normal affect an attack. The Flurry entry on the monk table has everything else factored in already(treating BAB as Monk level and as if using the two-weapon fighting feat with two light weapons).

[Propane]

Very clear now. Thanks, guys!