Reduce off-hand penalty to -2; off-hand adds half STR to damage.
The character is trained in fighting with a weapon in each hand.
The normal penalty for two-weapon fighting is reduced to -2 on
the primary hand and -2 on the off-hand (from -4/-8 or -6/-10
without this feat). The off-hand weapon adds half the character's
STR modifier (rounded down) to damage instead of the normal +0.
Rules Reference
Field
Value
Combat Action
Category
combat
Runtime / Classification
passive-conditional
Runtime / Duration
Runtime / Effect Kind
extra_attack
Runtime / Magnitude
Runtime / Trigger
reduces primary hand penalty to -2
Runtime / Uses
Notes
Special: Requires a light weapon in the off-hand for the reduced penalties. With a one-handed off-hand weapon, penalties are -4/-4 instead. The off-hand attack is a bonus attack granted in addition to the character's normal attack(s).