Your darkvision has a radius of 130 feet.

You have terrible day vision of less than average being 25ft during the daytime.

You are extremely vulnerable to the sunlight and after spending one and a half hours straight in the sunlight without any shade between it and you(cue wear cloaks with hoods so you can last longer in the sun, about two or three hours more) you start to take 1d4 damage every two hours you spend in the sun after. You will have a strong headache that grows and causes your mood to sour greatly while causing you to snap at those you call your own, the more time you spend in direct sunlight with no breaks of shade. However in damp climates while in sunlight ei: You stay in sunlight but its a cloudy or very foggy day, maybe you're exploring in a thick forest with lots of shade? You will gain 1d4 HP every two hours while in a damp climate. 

Drow(dark elf) you know the dancing lights cantrip. [2nd] You can cast Fire Bolt, [Tooltip Not Found] and Pyrotechnics cantrip. [1st] Burning Hands you can cast this spell up to three times once per long rest. [3rd] You can cast faerie fire six times per long rest. [5th] You can cast the darkness spell six times per long rest. Charisma is your spellcasting ability. 

Your Charisma score increases by 2, your Dexterity increases by 3

Per your Drow race histories, you know Undercommon, Common, Elvish, and two other languages of your choice.

You also can swim up to 35ft 

You have retractable claws and fangs.

Magically Amphibious, your body adapts subconsciously to grow gills on your neck once your head is submerged underwater, the gills fade from your neck when unconscious or when your head leaves the water. This cannot be undone by any magical means as it is a subconscious magic growing the gills in place on your neck upon your head being underwater.

The longest known Drow to have lived was 1000 years old, however they did not die of natural causes and were killed so how long a Drow can truly live is unknown.

Roll a d100 and if you get below 50 then you get Scale Coverage which is a rare gene. Anything above 51 and your Drow has a rare gene that allows for them to have retractable wings on their shoulderblades to fly.

The Drows have gained these Resistances Cold, Necrotic, and Acid. The Drow also has these Immunities, Fire and Poison.

For someone that is other than a Drow themselves to be offered a part of the Drows very soul to bond with is very scared and happens even more rarely, as due to the race having a bad history with the world, but what the Soul Bond(a type of Marriage Bond so to speak) is that the others lifespan grows to meet with the Drows, making them able to live as long as the Drow(Dark Elf). Here is the catch that no one other than the Drows are aware of, the Soul Bond allows for the partners to heal each other when they are dead within five minutes of the death, allowing them or their partner to cast Spare the Dying or Resurrection on themselves and the spell will travel instantly to their deceased partner, causing them to regain life, not at full health, but their partner will be alive and that is what matters to the Drow and possibly even their partner. This is know because the partners feel a sharp sudden pain in their chest when their partner dies(death saves per say for the PC) and this lets them know they have five minutes to cast one of the two spells to save their partner.

However there are downfalls to this as well, when your partner dies you must make a Con saving throw of 16 or higher so you do not die with them as well, this will cause you to feel large amounts of pain that causes you to have blurry vision(disadvantage on all perception checks), a pounding headache that causes for you to miss what details you would normally notice(disadvantage on checks and saving throws asides from death saves) while in this state you can barely move around without triggering some sort of phantom pain from your partners death that causes 1d6 physic damage. Depending on how deep the Soul Bond is, depends on how long this state with the Drow(or their chosen partner) feels this phantom pain. It could be as less as two weeks(a not too deep Soul Bond) or it could last a month(a really deeply Soul Bonded pair) 

There are limitations to being able to heal/bringing them back to life. EI their body has turned to instant ash by dragon fire, their brain is missing by a mindflayer attack(if this has happened then you need to hope that the ones with your bonded put the complete brain back into their head within the five minute mark so that you can cast Resurrection on your bonded so they can come back to life) if their head is missing they can not be brought back to life by Resurrection until the head has been reattached within the five minute mark. They can easily be brought back with missing limbs, ei: leg, hand, arm, or foot but the bleeding will need to be stopped either before or after.

You have proficiency with rapiers, shortswords, shortbows and Longbows

You have Expertise in Survival and Stealth due to living deep in the mountains with all sorts of dangers. You also have Half Proficiency with Medicine