Curse Mastery (Item Mastery)Source Weapon Master's Handbook pg. 26
You can coax curses from necromantic magic items.
Prerequisites: Use Magic Device 3 ranks, base Fortitude save bonus +6.
Benefit: You can cause an item that has a necromancy spell of 3rd level or higher in its construction requirements to cast bestow curse. You can use this feat once per day, plus an additional time per day at base Fortitude save bonus +9 and +12.