@Khazimhir In this context, "lifespan" is probably not exactly what we think of "lifespan". It's probably closer to "deity". They may not age and die like mortals, but they can still die if the source of their powers run dry.
Spoiler!
Why does Mangabuddy block spellcheck in their comment text fields?
You made me create a browser add-on to fix it.
https://sh.nu/qamkeg