Kill them all, and let the gods sort them out.
Prerequisite(s): Vendetta feat; Demanding Challenge class feature (cavalier 12th level)
Benefit: Expend all remaining uses of challenge for the day. All opponents within 20 feet who can see and hear you are affected by your challenge. At 18th level, this increases to 30 feet.
Undefeatable: The Collected Feats Sourcebook, Copyright 2009 – 2010, Louis Porter Jr. Design, Inc. Undefeated, Copyright 2011, Louis Porter Jr. Design, Inc.