By sacrificing your use of a spell, you’re able to extend the use of your Bardic Performance.
Prerequisite(s): 1st-level Bard
Benefit: You may sacrifice any number of spells at any time to increase the number of rounds that you’re able to use your Bardic Performance for the day. This increase is equal to one half of the spell level that you sacrificed (rounded down).
Undefeatable: The Collected Feats Sourcebook, Copyright 2009 – 2010, Louis Porter Jr. Design, Inc. Undefeated, Copyright 2011, Louis Porter Jr. Design, Inc.