TWF feat replaced by MWF feat when more than 2 hands are in question

[e-Spaceshot]

I've made a vivisectionist alchemist with the TWF feat.

My issue is that if I take the Vestigial Arms discovery, I then get a 3rd arm. This would automatically mean my TWF feat is then replaced by MWF feat, but since PFS characters can't take monster feats if that is the case my character becomes illegal.

Now The way I see it since monster feats aren't allowed/existent for PCs that then MWF feat can't replace TWF feat since for my PC, the MWF feat never existed and thus is unable to replace it.

I would like someone who knows a bit more about PFS specifically (I don't care for normal rules, since I could just take MWF feat or whatever) to share their thoughts on the matter. And yes I do realise that I can just not take the discovery, but I like it and would like to work it in.

[Sniggevert]

Why would your TWF feat normally be replaced by MWF? I see nothing about it in the Vestigial Arm discovery? Most feats don't change once selected...

Anyways, in PFS, you can only take feats from a Bestiary if, and only if, another legal source specifically calls them out as being available options for a class/archtype/etc.

[godsDMit]

Quoted from tht PRD, for reference, emphasis mine: "Vestigial Arm (Ex): The alchemist gains a new arm (left or right) on his torso. The arm is fully under his control and cannot be concealed except with magic or bulky clothing. The arm does not give the alchemist any extra attacks or actions per round, though the arm can wield a weapon and make attacks as part of the alchemist's attack routine (using two-weapon fighting). The arm can manipulate or hold items as well as the alchemist's original arms (for example, allowing the alchemist to use one hand to wield a weapon, another hand to hold a potion, and the third hand to throw a bomb). The arm has its own “hand” and “ring” magic item slots (though the alchemist can still only wear two rings and two hand magic items at a time). An alchemist may take this discovery up to two times."

1) No, MWF wouldnt replace your TWF, even if it wasnt for PFS, unless its some kind of houserule.
2) Considering the bolded section, Id allow you to weild a separate weapon in each hand. Youd get to attack once with your primary arm, and once with one of the secondary arms (Id count it secondary unless there is something that says it's primary). So if you were fighting skeletons you could choose your off-hand with a mace, instead of the offhand with the dagger. Once you would get to the point of getting multiple attacks with the offhand, you could choose which weapon for each attack.
Alternatively, I might allow you to wield a weapon in two hands as the primary and the extra hand with another weapon as the secondary attack, though Id probably have to look into that a bit more to figure out what kind of penalty Id want to give you, assuming the weapon you are two-handing is too heavy for the regular one-handed -2/-2 penalty.

That's just me though. If other people posted other responses, I might change my mind.

[Jiggy]

godsDMit wrote:

Alternatively, I might allow you to wield a weapon in two hands as the primary and the extra hand with another weapon as the secondary attack, though Id probably have to look into that a bit more to figure out what kind of penalty Id want to give you, assuming the weapon you are two-handing is too heavy for the regular one-handed -2/-2 penalty.

When employing the TWF mechanic, the off-hand weapon is the only one whose size/weight/handedness/whatever you want to call it affects the amount of the TWF penalty. The main hand weapon's category doesn't matter. Just like main-handing a light weapon doesn't give you smaller TWF penalties than main-handing a 1H weapon, main-handing a 2H weapon doesn't give you bigger TWF penalties than main-handing a 1H weapon. (It's just harder to do, since you need an extra arm or the ability/desire to use a kick or whatever in order to TWF while wielding a 2H weapon.)

[LazarX]

The vestigial arm specifically DOES NOT as stated in the description give you another limb to attack with. It gives you a limb to do something else with.

[Jiggy]

LazarX wrote:

The vestigial arm specifically DOES NOT as stated in the description give you another limb to attack with. It gives you a limb to do something else with.

For the second time in this thread, the Vestigial Arm ability wrote:

the arm can wield a weapon and make attacks as part of the alchemist's attack routine (using two-weapon fighting)

[Mike Schneider]

LazarX wrote:

The vestigial arm specifically DOES NOT as stated in the description give you another limb to attack with. It gives you a limb to do something else with.

Exactly -- since you have three arms now, you TWF or 2hPA with two of them while holding a heavy shield in the third, and enjoy much better AC compared to most two-handed builds.

[godsDMit]

Jiggy wrote:

godsDMit wrote:

Alternatively, I might allow you to wield a weapon in two hands as the primary and the extra hand with another weapon as the secondary attack, though Id probably have to look into that a bit more to figure out what kind of penalty Id want to give you, assuming the weapon you are two-handing is too heavy for the regular one-handed -2/-2 penalty.

When employing the TWF mechanic, the off-hand weapon is the only one whose size/weight/handedness/whatever you want to call it affects the amount of the TWF penalty. The main hand weapon's category doesn't matter. Just like main-handing a light weapon doesn't give you smaller TWF penalties than main-handing a 1H weapon, main-handing a 2H weapon doesn't give you bigger TWF penalties than main-handing a 1H weapon. (It's just harder to do, since you need an extra arm or the ability/desire to use a kick or whatever in order to TWF while wielding a 2H weapon.)

*blush*

Oops. Guess I was remembering that backwards, lol.

[Jiggy]

If it makes you feel any better, as I was typing it out I kept thinking "You know, that's actually kind of weird that only the off-hand weapon's size matters..."

:/