You can make impromptu sneak attacks more often.
Prerequisite(s): 7th-level arcane trickster
Benefit: You can make an impromptu sneak attack 2 additional times per day.
Section 15: Copyright Notice
Undefeatable: The Collected Feats Sourcebook, Copyright 2009 – 2010, Louis Porter Jr. Design, Inc. Undefeated, Copyright 2011, Louis Porter Jr. Design, Inc.