Pathfinder Adventure Path, Roleplaying Game Subscriber
Knowledge of the Ages (Su) You can search through time to recall some bit of forgotten lore or information. You can retry any Knowledge skill check you have made within the past minute, gaining an insight bonus on the check equal to your Charisma modifier. You can use this ability a number times per day equal to your Charisma modifier.
This is an Oracle of Time's Revelation. It appears to require a standard action to use, correct? The reason I ask is because Knowledge checks usually require no action.