Back From the Brink

You know how to keep a near-death experience from becoming a death experience.

Benefit: Your will to live is strong enough that you can be healed even after you’re technically dead. For the first round after you die, plus one additional round per point of Constitution bonus you possess, you can still be healed, although it is harder to do so once you have reached this point. If you are restored to 1 or more hit points before this time ends, you become stable, but remain unconscious for 1d10 minutes. If you are restored to 0 or fewer, but your negative hit points are not enough for you to be dead, you are unconscious and dying. You cannot become stabilized until you are restored to at least 1 hit point, so unless you are magically healed you will continue taking damage each turn until you die again.