Assuming I have a creature, with four natural arms (or a person with extra vestigial arms — RAI I know this is unintended, but RAW it's seemingly legit) and they decided to, instead of quad-wielding one handed weapons, dual wield two handed swords. According to the rules, the offhand weapon gets 1/2 Str bonus. However two handed weapons use 1+1/2 Str bonus.

How would this strength bonus/penalty work, assuming said creature or player could not access the Double Slice feat?

The similar question Can two-hand weapons be dual-wielded by something with four arms? does not explain how the bonus damage to strength is handled.


Your issue made me think about Primary and Secondary Natural attacks, because we resolve it in the same way.

Two-Weapon fighting Rules

By RAW, you need to apply the two-weapon fighting in a strict manner.

Just like Natural attacks, you have one Primary Hand, and the others are considered off-hands. With the TWF Feat you get reduced penalties to both your hands but the concept of Primary and Off-hands stay the same

After that, just apply the rules.

Are we carrying light weapons in all of our off-hands ?

No, so the full penalty applies (-6 to Primary and -10 to Off-hands without TWF, -4 to Primary and off-hands with TWF)

For strength bonus, just apply the rules as well.

Your primary hand(s) keep their usual bonus so 1.5x Strength bonus in this case, while your off-hands always have a 0.5x Strength bonus.

In the end, you're better off using 1 two-handed weapon and multiple light weapons in your additional hands.

Oh and also, you'll need the Multiweapons Fighting Feat instead of the standard TWF.

  • 1
    \$\begingroup\$ A marilith with a great sword and four scimitars? Do not want. \$\endgroup\$
    – Joe Bloggs
    Aug 10 '17 at 14:21
  • \$\begingroup\$ What about with the feat Double Slice? would offhand be 1x str? or 1.5x? \$\endgroup\$
    – Erudaki
    Aug 10 '17 at 14:21
  • \$\begingroup\$ @Erudaki It says to "Add your strength bonus to attacks made with your off-hands" so its 1x str. Even with Two-handed weapons in off hand. \$\endgroup\$
    – Dastardly
    Aug 10 '17 at 14:23
  • 1
    \$\begingroup\$ This is a good answer, though it's notable that Power Attack might still give the extra 50% damage from itself, since that only requires wielding a two-handed weapon (or a one-handed weapon in two hands). Or it might give standard damage (+50% due to two-handed, -50% due to off-hand). Still more efficient to use a two-hander and two light weapons. \$\endgroup\$
    – Delioth
    Aug 10 '17 at 15:34
  • \$\begingroup\$ Its also worth noting that Vestigial arms cant give extra attacks, so the best option then is dual wielding two-handed weapons. (Despite this not being RAI it is still legal by RAW) \$\endgroup\$
    – Erudaki
    Aug 11 '17 at 17:39

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