Wait lowkey so trueee, i also think part of it's because they didn't want to just kill off anyone cause of like family friendliness? thats why ragana was killed in her human form but they could still bring her back later?
My personal assumption was that common elves weren't immortal just had a longer lifespan than humans/time flows differently. But like super powerful elves/guardians like the sisters and lumia, noctura, were immortal. I think lumia sacrificing herself was to bring an end to both of them because the two were like bonded together as guardians
does bring up a good point about whos supposed to be the next guardian of shadow!!
I just dont understand how quartzine's soul could've been trapped in an amulet but #magicalmacguffin i suppose