Die Hard With A Vengeance
Prerequisites: Endurance, Die Hard, Great Fortitude, Die Harder
Benefit: If you fall to –1 or fewer hit points, you may enter a state similar to a barbarian's rage. You gain +4 to Strength and Constitution, get a +2 bonus on Will saves, but take a –2 penalty to AC. You do not gain the normal hit points for increased Con from this ability. Rather, the amount of negative hit points it takes to kill you increases by the amount of hit points you would normally gain.
This "rage" lasts for a number of rounds equal to your new Con modifier, or until you attain 0 hit points or higher, at which point you are fatigued for the duration of the encounter. If you are at or below your normal point of death when the "rage" ends, you die. You may use this power any number of times per day, but you may not enter this state if you are currently fatigued or exhausted.
Originally designed by Scott Bezzini, and used with his permission.