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

Your darkvision has a radius of 120 feet.

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.

Driders don’t need to sleep. Instead, they meditate deeply, remaining semiconscious, for 4 hours a day. (The Common word for such meditation is “trance.”) While meditating, you can dream after a fashion; such dreams are actually mental exercises that have become reflexive through years of practice. After resting in this way, you gain the same benefit that a human does from 8 hours of sleep.

Your Dexterity score increases by 2, and Charisma score increases by 1.

You have proficiency in the Perception skill.

You can speak, read, and write Common, and your choice of either Elvish or Undercommon.

You can choose to speak, read, and write either Elvish or Undercommon.

Driders stand between 7 and 9 feet tall, with their spider lower bodies reaching about 5 feet height. Your size is Medium.

Height:  6’ 10” + 2d12 inches

Weight:  750 lbs + 5d8 lbs

Average:  7’ 5”, 900 lbs

Driders that remain near Drow enclaves tend to be hateful toward Drow, these tend toward evil alignments. However, a rare few venture out of the Underdark; these individuals run the spectrum of alignments, usually tied to their outlook and motivation for adventuring.

Your creature type is both monstrosity and humanoid. You count as one size larger when determining your carrying capacity and the weight you can push or drag. 

You know the dancing lights cantrip. When you reach 3rd level, you can cast the faerie fire spell once with this trait and regain the ability to do so when you finish a long rest. When you reach 5th level, you can cast the darkness spell once with this trait and regain the ability to do so when you finish a long rest. Charisma is your spellcasting ability for these spells.