Kneecap Feat 5
Source Pathfinder Advanced Player's Guide
You deliver a punishing blow to an enemy's knee, shin, or other vulnerable anatomy within your reach. Make a Strike with one of your melee weapons or melee unarmed attacks. This attack doesn't deal damage. On a hit, the target takes a -10-foot status penalty to its Speed or a -15-foot status penalty on a critical hit. The penalty lasts for 1 round. This penalty applies only if the target has a land Speed and depends on legs or other targetable appendages to use its land Speed. As with all penalties to Speed, this can't reduce a creature's Speed below 5 feet.
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.
GoblinA creature with this trait can come from multiple tribes of creatures, including goblins, hobgoblins, and bugbears. Goblins tend to have darkvision. An ability with this trait can be used or chosen only by goblins. A weapon with this trait is created and used by goblins.