There’s some stuff about devils and how souls are recruited for the whole endless demon war thing that implies that everyone gets re-incarnated but its usually random, while elves and devils are always re-incarnated as the same race except in special circumstances.
It’s canon for elves, not so much for everybody else (unless you mean the spell). Though that sounds like some Mercy Killer thinking right there
There’s some stuff about devils and how souls are recruited for the whole endless demon war thing that implies that everyone gets re-incarnated but its usually random, while elves and devils are always re-incarnated as the same race except in special circumstances.