Bladethirst (Su)
Source: Advanced Player's Guide, p. 80
An arcane duelist of 6th level or higher may use performance to grant one weapon, one natural weapon, one end of a double weapon, or 50 items of ammunition of the same type within 30 feet a +1 enhancement bonus. This enhancement bonus increases by +1 for every three levels after 6th (maximum +5 at 18th level). These bonuses stack with existing bonuses and may be used to increase the item’s enhancement bonus up to +5 or to add any of the following weapon properties: defending, distance, ghost touch, keen, mighty cleaving, returning, shock, shocking burst, seeking, speed, or wounding (Pathfinder RPG Core Rulebook page 469). If the weapon is not magical, at least a +1 enhancement bonus must be added before adding special abilities. This performance replaces suggestion.