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.
Sit around and wait. I’m immortal.
“Hey this guy has sat here for 30 years and he hasn’t aged one bit!”
* ceases to exist *