>>37141334For elves, their longevity and affinity to magic is the stereotypical divider between them and humanity, alot of isekai and anime media tend to ignore this to make elves more relatable to human protagonists and the audience but if you emphasize those traits you can distinguish them very quickly.
If you have a particular idea or trait you want and it's unique, you can expand on it in order to create a concept that aligns with your nation.