Vengeful Hatred Feat 1
Source Pathfinder Core Rulebook
You heart aches for vengeance against those who have wronged your people. Choose one of the following dwarven ancestral foes when you gain Vengeful Hatred: drow, duergar, giant, or orc.
You gain a +1 circumstance bonus to damage with weapons and unarmed attacks against creatures with that trait. If your attack would deal more than one weapon die of damage (as is common at higher levels than 1st), the bonus is equal to the number of weapon dice or unarmed attack dice.
In addition, if a creature critically succeeds at an attack against you and deals damage to you, you gain your bonus to damage against that creature for 1 minute regardless of whether it has the chosen trait.
Special Your GM can add appropriate creature traits to the ancestral foes list if your character is from a community that commonly fights other types of enemies.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
DwarfA creature with this trait is a member of the dwarf ancestry. Dwarves are stout folk who often live underground and typically have darkvision. An ability with this trait can be used or selected only by dwarves. An item with this trait is created and used by dwarves.