Source: Tome of Magic
You have a knack for uncovering the personal truenames of friends and foes alike through study and investigation.
Prerequisite: Truespeak 9 ranks.
Benefit: You gain a +2 bonus on Knowledge checks made to discover a creature's personal truename (as described in Truename Research, page 196, Tome of Magic). In addition, the cost to research a personal truename is reduced by half.