You use your various fields of knowledge to hone your reflexes and evade the attacks of your enemies.
Benefit: Whenever you are about to make a Reflex save to resist an attack that normally deals half damage on a successful save, you may first make a Knowledge skill check using a Knowledge skill related to the effect. This check uses the same DC as the Reflex save. If your Knowledge check is successful, you instead take no damage on a successful save and only half damage even on a failed save. For example, Knowledge (arcana) allows you to avoid the breath weapons of dragons, constructs, and magical beasts. Refer to the Knowledge skill list for the topics covered by each knowledge skill.
Undefeatable: The Collected Feats Sourcebook, Copyright 2009 – 2010, Louis Porter Jr. Design, Inc. Undefeated, Copyright 2011, Louis Porter Jr. Design, Inc.