Gloom Elf

Gloom elves, also known as dark elves, are a dark-skinned sub-race of elves that predominantly live in the Gloomlands. They are often hated and feared due to their cruelty, though some affable Gloom elf societies exist in the Eastern Gloomlands.

Ethnic Traits

Supreme Darkvision. You have Darkvision with a range of 240 feet.
Gloom Elf Magic. Your elven lineage grants you the ability to innately cast certain spells, starting with a cantrip at level 1, and higher-level spells when you reach certain levels (as shown in the Gloom Elf Magic table). You can cast these spells once without expending mana, and you regain the ability to cast it in that way when you finish a Long Rest. You can also cast the spell using mana as usual.
Intelligence, Wisdom or Charisma is your spellcasting ability for any spells you cast with the this trait (choose the ability while creating your character).

Gloom Elf Magic

Level 1	Level 3	Level 5
A warlock cantrip of your choice	Faerie Fire	Darkness

Language. You know a language of your choice (most likely Elvish).

Culture

Common Customs, traditions and rituals

The drow had a number of customs, gestures, and rituals. For example, it was custom to kill all children with physical deficiencies; a commonly accepted gesture was dropping a knee and held weapons as a sign of surrender. There were many rituals as well, like the graduation ceremony for the graduates of the mage, priest, and warrior schools.

Ideals

Beauty Ideals

Due to a process of selective breeding that lasted for several generations, the drow (especially nobles) look attractive even when compared to other elves. Their alluring appearance, which could be used for seduction, was more often used to instill fear. Both male and female drow placed a great emphasis on maintaining their appearance, often wearing revealing, form fitting attire, and carefully applied makeup.

Gender Ideals

Lolth’s dogma mandated to recognize female drow as more valuable than males, who were considered worthless. This gave female drow absolute power, and they were also less likely to be sacrificed than males. Males who hoped to find any place of power often resorted to ends as treacherous as the women that ruled the drow, hoping to perhaps win a coveted place as the mate of a powerful matron mother.

Courtship Ideals

Courting was the domain of women in drow society. Trying to initiate a relationship was a reason for execution by torture and sacrifice for a male drow. In general, drow women chose their partners as animals would be chosen for breeding purposes.
Furthermore, once a relationship started, the male partner had no say on how long the relationship would last, or whether it should even start. The woman, on the other hand, could change partners as she desired.

Relationship Ideals

The secret of a working long-term relationship between drow was not love but tangible reasons, like the male having a history of fathering many female offspring. The best "normal" romantic relationship between two drow was similar to the one between a spoiled brat and her well trained, obedient dog, with the owner having the right to put the dog down for any reason.