@TehSDragon even if he's ~5000 years old right now, that doesn't necessarily mean his actual lifespan is 5000 years...plus I was under the impression that even if the physical body wears out, the soul itself can be transplanted into another suitable host body, allowing for essentially eternal life...although if I understand it correctly, then there's still several limits on that overall process, most importantly being: there are ways to "kill" the soul itself directly, the difficulty of repeatedly securing suitable bodies, difficulties in the transplant process, and the potential for souls to wear out over time and/or through repeated transfers (this being more likely the lower a soul's "tier" is)