You are quicker to scribe epic tales, and they are more effective, being easier to use and lasting longer.
Benefit: The epic tales that you scribe with your epic tales and Greater epic tales class abilities retain their supernatural potency twice as long as normal (2 days per class level) and require only 30 minutes to inscribe instead of an hour. Additionally, they require only a standard action to activate instead of a full-round action, and their duration is increased to 1 minute per 3 levels of pathfinder chronicler you possess.
Normal: See the epic tales class feature.
Undefeatable: The Collected Feats Sourcebook, Copyright 2009 – 2010, Louis Porter Jr. Design, Inc. Undefeated, Copyright 2011, Louis Porter Jr. Design, Inc.