Stipulations:
- You cannot die and are immune to disease
- You cannot alter the future such that you change the world from your point of origin. i.e. You cannot become so famous that future people recognize you as immortal.
- If you vary the timeline too much you will cease to exist.
join the military I cant die so if I just wear a balaclava or smth whilst firebombing nazis, I wont be famous, the legend about me will