Thanks to your preparation, your arcane ability is more varied than most.
Benefit: By studying a spellbook for 10 minutes, you can change one spell you are able to cast using your minor magic or major magic rogue talent to one sorcerer/wizard spell of the same level contained in the spellbook. This change is permanent until you take the time to change it via this feat again.
Pathfinder Roleplaying Game: Advanced Class Guide © 2014, Paizo Inc.; Authors: Dennis Baker, Ross Byers, Jesse Benner, Savannah Broadway, Jason Bulmahn, Jim Groves, Tim Hitchcock, Tracy Hurley, Jonathan H. Keith, Will McCardell, Dale C. McCoy, Jr., Tom Phillips, Stephen Radney-MacFarland, Thomas M. Reid, Sean K Reynolds, Tork Shaw, Owen K.C. Stephens, and Russ Taylor.