The lives you could not save stay with you to your final breath.
Prerequisite: You must have witnessed the death of a close companion in battle… a death that could have been prevented, such as from bleeding, failure to stabilize, or ongoing poison damage… or have the Death in the Family or The War background.
Benefit: You gain a +2 bonus on Heal checks. If you have 10 or more ranks in Heal, this bonus increases to +4. You can apply first aid as a move action and don’t take a penalty when treating deadly wounds without a healing kit.
Completion Benefit: You and each ally within 10 feet of you gain a +2 bonus on saves against death effects. In addition, once per day you can spontaneously convert any 5th-level or higher conjuration (healing) spell into breath of life.
Pathfinder Roleplaying Game: Ultimate Campaign. © 2013, Paizo Publishing, LLC; Authors: Jesse Benner, Benjamin Bruck, Jason Bulmahn, Ryan Costello, Adam Daigle, Matt Goetz, Tim Hitchcock, James Jacobs, Ryan Macklin, Colin McComb, Jason Nelson, Richard Pett, Stephen Radney-MacFarland, Patrick Renie, Sean K Reynolds, F. Wesley Schneider, James L. Sutter, Russ Taylor, and Stephen Townshend.