Eilistraee, The Dark Maiden
In 5th Edition Material, we see precious little on Eilistraee. In the Sword Coast Adventurer’s Guide, we see:
Some drow exiles have heard the song of Eilistraee, urging them out onto the surface to behold the moon as it rises. The drow goddess of song, beauty, swordwork, hunting, and moonlight, she is the patron of drow who reject the evils of their society, offering them light and hope.
In the AD&D book Demihuman Deities, Eilistraee is given more attention. Here we learn “the message of Eilistraee”:
A rightful place awaits you in the Realms
Above, in the Land of the Great Light. Come in peace, and live
beneath the sun again, where trees and flowers grow.
Followers of the Dark Maiden also observe a festival meant to bring Drow and non-Drow elves together:
At least once a year, priests of Eilistraee undertake a Run. Those
who are not drow blacken their bodies with natural dyes and
oils. All priests, drow or not, boil certain leaves and berries to
make their hair silvery, and go wandering (on the surface
world). (Hostile drow say their silver hair indicates that the
brains within the head are addled, though many drow who do
not worship Eilistraee have silver hair.) Trusting to their music,
kind ways, and sword skills to keep them from being slain as
drow, priests of the Dark Maiden go where they are strangers,
making an effort to seek out elven communities and bring them
game, kindness, and helping hands. They try to learn new
songs, music, and sword ways, and do not come to preach their
faith or make a mark for themselves.