Occult Acumen is a job trait in Final Fantasy XI. It increases the TP bonus when dealing damage with Elemental or Dark magic, with the TP Bonus increasing as the level of the trait increases. Occult Acumen I is obtained by Dark Knights (level 45), Scholars (level 78), and Black Mages (level 85). Occult Acumen II is obtained by Dark Knights (level 58) and Scholars (level 90). Occult Acumen III, IV, and V are only obtained by Dark Knights, at levels 71, 84, and 97, respectively.