Guardian's Deflection (Swashbuckler) Feat 4
Source Pathfinder Advanced Player's Guide
Trigger An ally within your melee reach is hit by an attack, you can see the attacker, and a +2 circumstance bonus to AC would turn the critical hit into a hit or the hit into a miss.
Requirements You are wielding a single one-handed melee weapon and have your other hand or hands free.
You use your weapon to deflect the attack against your ally, granting a +2 circumstance bonus to their AC against the triggering attack. This turns the triggering critical hit into a hit, or the triggering hit into a miss.
Effect: Guardian's Deflection
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.
SwashbucklerThis indicates abilities from the Swashbuckler class.