Fair. I think if you were going to go the potion or magic route, long-lived would make more sense than immortality, personally.

I can't even bring myself to write that as a placeholder.... lol

OHMYGODS YES! 😂

Good question. How about either/or? Or both? They are both very long lived, so what are your pet peeves about them in stories?

I've never thought about what makes it feasible.... 🤔 Could you give me an example of what doesn't make it believable? (I have an immortal character in one story and want to make sure I write it well....)