Knockback Strike Feat 10
Source Pathfinder Core Rulebook
You focus your strength into a blow powerful enough to push an enemy away from you. Make an unarmed Strike. If you hit, attempt an Athletics check to Shove the target. This attack uses the same multiple attack penalty as your Strike, and doesn't count toward your multiple attack penalty.
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.
ConcentrateAn action with this trait requires a degree of mental concentration and discipline.
MonkAbilities with this trait are from the monk class. A weapon with this trait is primarily used by monks.