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.
Not everyone. Most souls go to outer planes and just sit there. Lower planes have a special property of wiping memories through the river Styx and converting them into fiends. Which then either slowly evolve into useful fiends or much more likely are destroyed in the Blood War or eaten by night hags or higher level fiends.
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.
Not everyone. Most souls go to outer planes and just sit there. Lower planes have a special property of wiping memories through the river Styx and converting them into fiends. Which then either slowly evolve into useful fiends or much more likely are destroyed in the Blood War or eaten by night hags or higher level fiends.