>>2477447D&D elf gods had a civil war/rebellion when one (who became Lolth) decided she wanted more power/to rule/etc. After several failed attempts to get her husband (the chief elf god) ranging from assassination to giving cursed equipment before important battles, she was found out and literally sent to hell, along with her kids who had helped. Eilistraee had been the only one tricked into helping her mom, and would have been forgiven and allowed to stay but decided to take the punishment as well so that the newly-cursed/banished/fallen dark elves... aka drow... had at least one good god to potentially follow.
