Your creature type is monstrosity.

When determining your ability scores, you increase one of those scores by 2 and increase a different score by 1

Although elves reach physical maturity at about the same age as humans, the elven understanding of adulthood goes beyond physical growth to encompass worldly experience. An elf typically claims adulthood and an adult name around the age of 100 and can live to be 750 years old. drider being augmented drow follow this similar life span.

Insane, reclusive, and evil, most driders are usually chaotic evil

Your size is Medium.

 Your base walking speed is 30 ft. You have a climb speed of 30 ft.

You know the dancing lights cantrip. Charisma is your spellcasting ability for this spell

You have advantage on saving throws against being charmed, and magic can’t put you to sleep.

You can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.

You have disadvantage on attack rolls and on Wisdom (Perception) checks that rely on sight when you, the target of your attack, or whatever you are trying to perceive is in direct sunlight.

 You can see in dim light within 120 feet of you as if it were bright light, and in darkness as if it were dim light. You can’t discern color in darkness, only shades of gray.

Your lower spider half has granted you extra mobility. You ignore movement restrictions caused by webbing.

You can speak, read, and write Common, Undercommon and Elvish.