[AlexanderHowl]

I would model that as a very powerful form of Precognition actually. With Precognition (Cosmic, Death Avoidance, +300%; Cosmic, No Roll Required, +100%; Reliable 8, +40%) [135], you could have the character model the events before they next died, meaning that they could perfectly avoid their own death. In effect, they would know exactly what events led up to their death and, at the last minute, could avoid their own death. In effect, the character cannot be killed not because they have Unkillable but, instead, because they know how to avoid their death. The 'save point' is just the time and place that they last used their ability.